Time-series of biogeochemical and flow data from a tidal salt-marsh creek, Sage Lot Pond, Waquoit Bay, Massachusetts (2012-2016)

Metadata also available as - [Questions & Answers] - [Parseable text] - [XML]

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Mann, Adrian G.
Originator: O'Keefe Suttles, Jennifer A.
Originator: Gonneea, Meagan E.
Originator: Brosnahan, Sandra M.
Originator: Brooks, Thomas W.
Originator: Wang, Zhaohui A.
Originator: Ganju, Neil K.
Originator: Kroeger, Kevin D.
Publication_Date: 2019
Title:
Time-series of biogeochemical and flow data from a tidal salt-marsh creek, Sage Lot Pond, Waquoit Bay, Massachusetts (2012-2016)
Geospatial_Data_Presentation_Form: CSV
Series_Information:
Series_Name: data release
Issue_Identification: DOI:10.5066/P9STIROQ
Publication_Information:
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
Other_Citation_Details:
Suggested citation: Mann, A.G., O'Keefe Suttles, J.A., Gonneea, M.E., Brosnahan, S.M., Brooks, T.W., Wang, Z.A., Ganju, N.K., and Kroeger, K.D., 2019, Time-series of biogeochemical and flow data from a tidal salt-marsh creek, Sage Lot Pond, Waquoit Bay, Massachusetts (2012-2016): U.S. Geological Survey data release, https://doi.org/10.5066/P9STIROQ.
Online_Linkage: https://doi.org/10.5066/P9STIROQ
Online_Linkage:
Description:
Abstract:
Extended time-series sensor data were collected between 2012 and 2016 in surface water of a tidal salt-marsh creek on Cape Cod, Massachusetts. The objective of this field study was to measure water chemical characteristics and flows, as part of a study to quantify lateral fluxes of dissolved carbon species between the salt marsh and estuary. Data consist of in-situ measurements including: salinity, temperature, pH, dissolved oxygen, redox potential, fluorescent dissolved organic matter, turbidity and chlorophyll. Surface water flow, water level and water elevation data were also measured. The data provided in this release represent a compiled data set consisting of multiple sensor deployments between 2012 and 2016.
Purpose:
Continuous sensor data were collected to support estimation of the lateral carbon flux portion of the carbon budget in a salt marsh environment. Carbon flux can be calculated following corrections of flow for ebb bias and for flow that occurs outside of the creek.
Supplemental_Information:
These data are associated with the following Woods Hole Coastal and Marine Science Center field activities:
2012-049-FA ( https://cmgds.marine.usgs.gov/fan_info.php?fan=2012-049-FA )

2013-037-FA ( https://cmgds.marine.usgs.gov/fan_info.php?fan=2013-037-FA )

2014-081-FA ( https://cmgds.marine.usgs.gov/fan_info.php?fan=2014-081-FA )

2015-038-FA ( https://cmgds.marine.usgs.gov/fan_info.php?fan=2015-038-FA)

2016-015-FA ( https://cmgds.marine.usgs.gov/fan_info.php?fan=2016-015-FA )
Although the data are a result of measurements at an instrument location, the bounding coordinates in the metadata includes the pond and adjacent estuary that are impacted by lateral flow to/from the salt marsh, as measured at the creek mouth. The detailed fix of instrument location is in the CollectionDates_Table2.csv described below.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20121106
Ending_Date: 20161231
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -70.5163
East_Bounding_Coordinate: -70.50691
North_Bounding_Coordinate: 41.55657
South_Bounding_Coordinate: 41.5515
Keywords:
Theme:
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:5cd475e6e4b062989a9e94e8
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: water chemistry
Theme_Keyword: surface-water level
Theme_Keyword: water quality
Theme_Keyword: salinity
Theme_Keyword: acoustic doppler current profiling
Theme_Keyword: water properties
Theme_Keyword: water temperature
Theme_Keyword: turbidity
Theme_Keyword: wetland ecosystems
Theme_Keyword: biochemistry
Theme_Keyword: time series datasets
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: inlandWaters
Theme_Keyword: oceans
Theme:
Theme_Keyword_Thesaurus: National Agricultural Library Thesaurus
Theme_Keyword: salt marshes
Theme_Keyword: chlorophyll
Theme_Keyword: dissolved organic matter
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: low and intermediate salt marsh
Theme_Keyword: Coastal and Marine Hazards and Resources Program
Theme_Keyword: CMHRP
Theme_Keyword: Woods Hole Coastal and Marine Science Center
Theme_Keyword: WHCMSC
Place:
Place_Keyword_Thesaurus: Geographic Names Information System
Place_Keyword: Cape Cod
Place_Keyword: Commonwealth of Massachusetts
Place_Keyword: Waquoit Bay
Place_Keyword: Sage Lot Pond
Place_Keyword: Barnstable County
Place_Keyword: Falmouth
Access_Constraints: none
Use_Constraints: none
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Adrian G Mann
Contact_Organization: Woods Hole Coastal and Marine Science Center
Contact_Position: Physical Scientist
Contact_Address:
Address_Type: mailing and physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Country: U.S.
Contact_Voice_Telephone: 508-548-8700 x2316
Contact_Electronic_Mail_Address: amann@usgs.gov
Browse_Graphic:
Browse_Graphic_File_Name: Browse_Graphic_File_Description:
Aerial photo of the study site, taken by Jim Rassman. The red box indicates the location of the instrument deployments.
Browse_Graphic_File_Type: JPEG
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Drift and fouling of each sensor on the YSI EXO2 sonde were evaluated after each field deployment. Correction factors based on fouling and drift were calculated and applied according to Wagner and others, 2006. Fouling was determined as the difference between a sensor reading in solution prior to cleaning and after cleaning. Calibration drift was determined as the difference between the prepared value of a calibration solution and cleaned sensor reading in calibration solution. If the absolute value of the sum of the fouling and drift are beyond a predetermined acceptable amount of fouling (Table 1, Wagner and others, 2006), then a correction factor (calculated from these fouling and drift assessments) would be applied to the data. If the data required a correction factor beyond an acceptable threshold (Table 1), the data were removed from the dataset. Fouling was determined in three different ways during the 2012-2016 field seasons: field comparison of dirty deployed EXO and clean replacement EXO; laboratory comparison of sensor data in a bucket of field water prior to and after cleaning; laboratory comparison of sensor data in known standards prior to and after cleaning. Bucket tests were not ideal for all parameters; for some parameters the concentration in the bucket was near to the detection limit of the sensor (for example turbidity and total algae). Field comparison was not available for all deployments (due to battery failure of deployed sondes). Comparison in standards was most consistently assessed. Calibration drift was assessed on cleaned sensors post deployment. After the fouling evaluation was complete, sensors were cleaned and placed in clean standards. Readings were noted and sensors were recalibrated, if necessary, prior to next deployment. Data from optical sensors not included in Wagner and others, 2006 (fluorescent dissolved organic matter (fDOM) and chlorophyll) were corrected using the same criteria as turbidity.
Water flow and water depth data were measured by a SonTek IQ-Plus Acoustic Doppler current profiler (ADCP), using SonTek IQ Firmware version 1.10. The minimum operating depth of the IQ-plus is 0.08 meters, and maximum is 5.0 meters. Water level accuracy was 0.1% of measured depth or +-0.003 meters, whichever was greater. Pressure sensor accuracy was 0.1% of full scale, and sensor range was 10 meters. Velocity accuracy was +-1% of measured velocity, or +-0.5 centimeters per second. Data were evaluated between deployments, based on the signal to noise ratio. Data with a signal to noise ratio below 4 were omitted, as the velocity signal may become compromised. Depth values less than 0.01 meters were also removed because they were determined to be below detection.
Citation used: Wagner, R.J., Boulger, R.W., Jr., Oblinger, C.J., and Smith, B.A., 2006, Guidelines and standard procedures for continuous water-quality monitors—Station operation, record computation, and data reporting: U.S. Geological Survey Techniques and Methods 1-D3, 51 p.
Logical_Consistency_Report:
Water chemical data were primarily measured with a YSI EXO2 sonde (s/n 12J102016) during the data collection period. Between 2012 and 2014, alternate sondes (YSI 600XLM, Wetlabs ECO triplet) were occasionally deployed simultaneously as a comparison test or if we suspected a problem with EXO2 sensor performance. These instruments were maintained with the same protocol as the EXO2 sonde. Data from the YSI 600XLM and Wetlabs were only substituted if EXO data was not acceptable. Throughout the 2015 field season, two EXO2 sondes (s/n 12J102016 and s/n 12J101654) were used interchangeably at this location. Details of data collection dates and instrument type used are included in Table 2.
Completeness_Report:
Missing values indicate that either no measurement was made, or the data were omitted because it was determined that error due to sensor drift and fouling exceeded the correction threshold (in the case of the EXO2 sensors), or the signal to noise ratio fell outside of the acceptable threshold (in the case of the SonTek IQ ADCP) as described in the Attribute Accuracy Report.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Latitude and Longitude were measured with a handheld Garmin 76Cx GPSmap unit in the field at time of collection. The GPS unit indicated accuracy was within 3 meters. No formal positional accuracy tests were conducted.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
Prior to September 2015, elevation of the water level sensor was obtained using rod and optical level survey. Elevation measurements were relative to a vertical control point referenced to the North American Vertical Datum of 1988 (NAVD88) based on long-term GPS base station occupations using a Trimble receiver with accuracy within 3 centimeters. Error associated with readings relative to the vertical control point was less than 1 centimeter. After September 2015, elevation of the water level sensor was measured with a Trimble Real-Time Kinematic (RTK) GPS. Accuracy was 2-3 cm according to instrument corrections. No formal positional accuracy tests were conducted.
Lineage:
Process_Step:
Process_Description:
A YSI EXO2 multiparameter sonde was deployed on a semi-continuous basis between November 1, 2012 and December 31, 2016 near the mouth of a tidal creek which flows into Sage Lot Pond, located within Waquoit Bay National Estuarine Research Reserve in Mashpee, Massachusetts. Latitude and Longitude were measured with a handheld Garmin 76Cx GPSmap unit in the field at time of collection. The EXO2 sonde was instrumented with sensors to measure and record ambient water temperature, specific conductivity, dissolved oxygen, turbidity, fluorescent Dissolved Organic Matter (fDOM), pH, Oxidation Reduction Potential (ORP), Total Algae (chlorophyll and blue green algae-Phycoerythrin), and pressure at regular intervals during deployment periods. Sample intervals were set for either 2 minutes or 8 minutes in 2012-2014, and 5 minutes thereafter. Proprietary KorEXO software was used to calibrate sensors and download data. Salinity in practical salinity units (psu) was calculated from conductivity and temperature within the software. Turbidity was also converted from formazin nephelometric units (FNU) to nephelometric turbidity units (NTU) within the software.
An automatic wiper was set to wipe the sensor faces every 20 minutes to prevent fouling. Each sensor was wrapped with anti-fouling copper tape; a copper anti-fouling guard cup was also placed around the sensors. The sonde was mounted vertically in a fixed position on a mounting plate which was attached to a post that had been driven into the bottom of the creek. The sonde was positioned so that the height of the sensor face was approximately 40 cm from the bottom of the creek. Sensor height above the sediment was measured at the start and end of each deployment with a meter stick. After a period of time (typically 2-3 weeks), the deployed sensor was removed from the creek and brought back to the lab for a post-deployment check, data downloading and sensor cleaning.
Between 2012 and 2014, alternate sensors were occasionally deployed simultaneously alongside the EXO2 as a comparison test or if we suspected a problem with EXO2 sensor performance. These instruments included a YSI 600XLM, and a Wetlabs ECO triplet. These instruments were maintained with the same protocol as the EXO2 sonde. This process step took place from 2012 to 2016.
Process_Date: 2016
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Jennifer O'Keefe Suttles
Contact_Organization: Woods Hole Coastal and Marine Science Center
Contact_Address:
Address_Type: mailing and physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Country: US
Contact_Voice_Telephone: 508-548-8700 x2385
Contact_Electronic_Mail_Address: jokeefesuttles@usgs.gov
Process_Step:
Process_Description:
A Sontek IQ-Plus acoustic Doppler current profiler (ADCP) was deployed in the channel of a tidal creek which flows into Sage Lot Pond, located within Waquoit Bay National Estuarine Research Reserve in Mashpee, Massachusetts. The ADCP was co-deployed with the water quality sonde. Data included in this report are water elevation in meters (calculated from water level) and flow data in cubic meters per second collected every 15 minutes, almost consecutively, between November 1, 2012 to December 31, 2016.
The ADCP was mounted on a solid platform secured into the creek bottom; it was positioned in the center of the channel at least 3 m distance from other sensors or structures in the creek. Precise elevation measurements of the instrument itself were measured using Real-Time Kinetic GPS (RTK) once per season, or if the instrument was re-positioned. These elevations are included in Table 2. However, prior to July 11, 2014 the elevation of the ADCP instrument was not directly measured using RTK and water level was calculated using the measured elevation of the EXO2 instrument and the mean difference in overlapping depth data from both instruments. The channel geometry of the creek was measured using a measuring stick and a level line across the channel for reference, and entered into the IQ SensorNet instrument software to calculate discharge area. The channel geometry was re-measured each time the instrument was re-positioned or removed from the creek for servicing. Debris and fouling on the surface of the instrument were periodically cleaned with a mop. Data from the instrument were downloaded in the field onto a laptop during regular field checks, and was further processed in the lab. This process step took place from 2012 to 2016.
Process_Date: 2016
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Sandra Brosnahan
Contact_Organization: Woods Hole Coastal & Marine Science Center
Contact_Address:
Address_Type: mailing and physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Country: US
Contact_Voice_Telephone: 508-548-8700 x2265
Contact_Electronic_Mail_Address: sbrosnahan@usgs.gov
Process_Step:
Process_Description:
Raw data files from the EXO2 were downloaded in the field or in the lab after each deployment and backed up onto a hard drive as well as to a Woods Hole Coastal and Marine Science Center (WHCMSC) network server. Each deployment file was then exported into Matlab (version 2014a) for further evaluation and processing. Initially, excess pre- and post- deployment data were removed (i.e. data collected when the sonde was not deployed in the creek). Corrections to data, due to sensor fouling and drift (assessed during calibration checks between deployments), were then applied as appropriate, and any remaining data that were out of sensor range were omitted. Data collected from additional sensors that were periodically deployed concurrently with the EXO2 Sonde were also corrected for drift and fouling, and were merged with the EXO data only if the EXO data was not acceptable. Turbidity, fDOM, Chlorophyll and Blue-Green Algae (BGA) data were further screened using a “despike” Matlab script which filtered the data when a jump in values exceeded a threshold of 20 units (well beyond the expected range of values between sample points), and removed spikes that were greater than 50% from a 5 point median filter of the signal. This process step took place from 2012 to 2016.
Process_Date: 2016
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Jennifer O'Keefe Suttles
Contact_Organization: Woods Hole Coastal & Marine Science Center
Contact_Address:
Address_Type: mailing and physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Country: US
Contact_Voice_Telephone: 508-548-8700 x2385
Contact_Electronic_Mail_Address: jokeefesuttles@usgs.gov
Process_Step:
Process_Description:
Raw data files from the SonTek IQ-Plus ADCP were downloaded in the field or every 3-4 weeks. Data were visually evaluated with the IQ software in the field before continuing with data collection. Raw data were brought back to the lab and backed-up onto a hard drive as well as to a WHCMSC network server. Each deployment file was then imported into Matlab (version 2014a) for further evaluation and processing. Data were evaluated between deployments based on a predetermined acceptable ratio of signal to noise. Data with an SNR ratio that fell outside of this threshold (acceptable SNR threshold ranged from 4 to 70; per recommendation by SonTek technical support) were removed. Depth values less than 0.01 m were also removed. Data that were deemed erroneous from a known disturbance in the creek, large storm or ice cover were omitted as appropriate. This process step took place from 2012 to 2016.
Process_Date: 2016
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Sandra Brosnahan
Contact_Organization: Woods Hole Coastal & Marine Science Center
Contact_Address:
Address_Type: mailing and physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Country: US
Contact_Voice_Telephone: 508-548-8700 x2265
Contact_Electronic_Mail_Address: sbrosnahan@usgs.gov
Process_Step:
Process_Description:
After corrected for drift and fouling, fDOM data were also corrected for temperature, turbidity and inner filter effect, based on the procedures followed by Downing and others, 2012. Correction equations were based on an in-house laboratory experiment on October 5, 2017 using water collected from the Sage Lot Pond study site. Because turbidity values in the lab experiment did not exceed 220 NTU, a constant correction value, equivalent to turbidity value 220 NTU (0.2144 Quinine Sulfate Equivalent (QSU)), was used for any samples with turbidity values above 220 NTU. Otherwise, the exponential correction factor was applied. Turbidity values exceeding 500 NTU, remaining after data were corrected, were omitted as it was determined that these were unreliable values for this study site.
Citation: Downing, B.D., Pellerin, B.A., Bergamaschi, B.A., Saraceno, J.F., and Kraus, T.E.C., 2012, Seeing the light: The effects of particles, dissolved materials,and temperature on in situ measurements of DOM fluorescence in rivers and streams: Limnology and Oceanography-Methods, v. 10, p. 767-775, https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.4319/lom.2012.10.767.
Process_Date: 201710
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Jennifer O'Keefe Suttles
Contact_Organization: Woods Hole Coastal & Marine Science Center
Contact_Address:
Address_Type: mailing and physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02536
Country: US
Contact_Voice_Telephone: 508-548-8700 x2385
Contact_Electronic_Mail_Address: jokeefesuttles@usgs.gov
Process_Step:
Process_Description:
Finally, all corrected chemical and flow data were adjusted and interpolated onto the same time stamp at a regular 5-minute sample interval using Matlab (version 2014a). The xlswrite function was used to write the data out as a CSV file.
Process_Date: 2019
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Adrian Mann
Contact_Organization: Woods Hole Coastal and Marine Science Center
Contact_Position: Physical Scientist
Contact_Address:
Address_Type: mailing and physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Country: US
Contact_Voice_Telephone: 508-548-8700 x2236
Contact_Electronic_Mail_Address: amann@usgs.gov
Process_Step:
Process_Description:
Excel (version 2013) was used to create separate tables which document additional information associated with these data. Table 1 (EXO_QAQC_Table1.csv) documents the correction criteria and maximum allowable limits for data corrections. Table 2 (Collection Dates_Table2.csv) documents the data collection date ranges, instrument type and instrument horizontal and vertical positional information. These tables were then exported as CSV files using "save as". These tables are described in the entity and attribute section.
Process_Date: 2019
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Adrian Mann
Contact_Organization: Woods Hole Coastal and Marine Science Center
Contact_Position: Physical Scientist
Contact_Address:
Address_Type: mailing and physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Country: US
Contact_Voice_Telephone: 508-548-8700 x2236
Contact_Electronic_Mail_Address: amann@usgs.gov
Process_Step:
Process_Description:
Added keywords section with USGS persistent identifier as theme keyword.
Process_Date: 20200806
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: VeeAnn A. Cross
Contact_Position: Marine Geologist
Contact_Address:
Address_Type: Mailing and Physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: 508-548-8700 x2251
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: vatnipp@usgs.gov
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Point
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 1.0E-5
Longitude_Resolution: 1.0E-5
Geographic_Coordinate_Units: Decimal degrees
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257222101
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Datum_Name: North American Vertical Datum of 1988
Altitude_Resolution: 1.0
Altitude_Distance_Units: centimeters
Altitude_Encoding_Method:
Explicit elevation coordinate included with horizontal coordinates
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: SLPCreekSensorData
Entity_Type_Definition:
Continuous water-quality, water elevation and flow data measured in a marsh creek draining into Sage Lot Pond, Waquoit Bay, MA between 2012-2016
Entity_Type_Definition_Source: Adrian Mann
Attribute:
Attribute_Label: Collection_Date
Attribute_Definition:
A numeric identifier of the date the measurement was collected in the format of mm/dd/yyyy.
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 11/01/2012
Range_Domain_Maximum: 12/31/2016
Attribute_Units_of_Measure: MM/DD/YYYY
Attribute:
Attribute_Label: Collection_Time_UTC
Attribute_Definition: Time of collection in UTC (HH:MM)
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0:00
Range_Domain_Maximum: 24:00
Attribute_Units_of_Measure: HH:MM
Attribute:
Attribute_Label: WaterTemp_C
Attribute_Definition:
Surface water temperature in degrees Celsius, measured by a Conductivity/Temperature sensor (measurement range -5 to 50 degrees Celsius) on a YSI EXO2 multiparameter sonde. Blank values indicate that no data were collected.
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -3.040
Range_Domain_Maximum: 33.417
Attribute_Units_of_Measure: Degrees Celsius
Attribute:
Attribute_Label: Salinity_psu
Attribute_Definition:
Surface water salinity in psu, measured by a Conductivity/Temperature sensor on a YSI EXO2 multiparameter sonde and calculated from Conductivity and Temperature using algorithms found in Standard Methods for the Examination of Water and Wastewater (17th ed), American Public Health Association, Washington, D.C, 1989. The use of the Practical Salinity Scale results in values that are unitless, since the measurements are carried out in reference to the conductivity of standard seawater at 15 deg C. Missing values indicate that either no measurement was made, or the data were omitted because it was determined that error due to sensor drift and fouling exceeded the correction threshold as described in the attribute accuracy report.
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.130
Range_Domain_Maximum: 32.888
Attribute_Units_of_Measure: psu
Attribute:
Attribute_Label: pH
Attribute_Definition:
Measurement of surface-water pH using a pH/ORP sensor (pH measurement range of 0-14 pH units) on a YSI EXO2 multiparameter sonde. pH measures the acidity or alkalinity of water, with a pH of 7 being neutral. A pH of 0 is most acidic and 14 most basic. Missing values indicate that either no measurement was made, or the data were omitted because it was determined that error due to sensor drift and fouling exceeded the correction threshold as described in the attribute accuracy report.
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 6.233
Range_Domain_Maximum: 8.785
Attribute_Units_of_Measure: pH units
Attribute:
Attribute_Label: ORP_mV
Attribute_Definition:
Measurement of surface-water oxidation-reducing potential in millivolts using a pH/ORP sensor (ORP measurement range of -999 to 999 mV) on a YSI EXO2 multiparameter sonde. Missing values indicate that either no measurement was made, or the data were omitted because it was determined that error due to sensor drift and fouling exceeded the correction threshold as described in the attribute accuracy report.
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -237.473
Range_Domain_Maximum: 374.217
Attribute_Units_of_Measure: millivolts
Attribute:
Attribute_Label: DOsat_perc
Attribute_Definition:
Surface water measurement of dissolved oxygen in percent saturation using an optical dissolved oxygen sensor (measurement range of 0-500% air saturation) on a YSI EXO2 multiparameter sonde. Missing values indicate that either no measurement was made, or the data were omitted because it was determined that error due to sensor drift and fouling exceeded the correction threshold as described in the attribute accuracy report.
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.101
Range_Domain_Maximum: 295.400
Attribute_Units_of_Measure: percent air saturation
Attribute:
Attribute_Label: DO_mgL
Attribute_Definition:
Surface water measurement of dissolved oxygen in milligrams per liter using an optical dissolved oxygen sensor (measurement range of 0-50 mg/L) on a YSI EXO2 multiparameter sonde. Missing values indicate that either no measurement was made, or the data were omitted because it was determined that error due to sensor drift and fouling exceeded the correction threshold as described in the attribute accuracy report.
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.030
Range_Domain_Maximum: 20.898
Attribute_Units_of_Measure: milligrams per liter (mg/L)
Attribute:
Attribute_Label: Turbidity_NTU
Attribute_Definition:
Surface water measurement of turbidity in NTU using an optical turbidity sensor (measurement range of 0-999 FNU) on a YSI EXO2 multiparameter sonde. Turbidity is measured in accordance with ASTM D7315-07a “Test Method for Determination of Turbidity Above 1 Turbidity Unit (TU) in Static Mode.” This method calls for this sensor type to report values in formazin nephelometric units (FNU), which is the default calibration unit for the EXO sensor. Turbidity units were converted in the software to nephelometric turbidity units (NTU), which is more commonly used in this application. Blank values indicate that either no measurement was made, or the data were omitted because it was determined that error due to sensor drift and fouling exceeded the correction threshold as described in the attribute accuracy report.
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.001
Range_Domain_Maximum: 438.660
Attribute_Units_of_Measure: nephelometric turbidity units (NTU)
Attribute:
Attribute_Label: FDOM_QSU
Attribute_Definition:
Surface water measurement of fluorescent dissolved organic matter (fDOM) in parts per billion (ppb) of Quinine Sulfate Equivalent (QSU), corrected for temperature, turbidity and inner filter effects, using an optical fDOM sensor (measurement range of 0-300 ppb QSU) on a YSI EXO2 multiparameter sonde. Missing values indicate that either no measurement was made, or the data were omitted because it was determined that error due to sensor drift and fouling exceeded the correction threshold as described in the attribute accuracy report.
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.011
Range_Domain_Maximum: 110.075
Attribute_Units_of_Measure: parts per billion of Quinine Sulfate Units (QSU)
Attribute:
Attribute_Label: Chl_ugL
Attribute_Definition:
Surface water measurement of chlorophyll in micrograms per liter (ug/L) using an optical Total Algae-phycoerythrin sensor (measurement range 0-400 ug/L) on a YSI EXO2 multiparameter sonde. The Total Algae sensor uses a blue-emitting LED that excites the chlorophyll a (chl) molecule and generates results in Relative fluorescence units (RFU) or ug/L of pigment. Missing values indicate that either no measurement was made, or the data were omitted because it was determined that error due to sensor drift and fouling exceeded the correction threshold as described in the attribute accuracy report.
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.010
Range_Domain_Maximum: 190.184
Attribute_Units_of_Measure: micrograms per liter (ug/L)
Attribute:
Attribute_Label: BGA_ugL
Attribute_Definition:
Surface water measurement of Blue-Green Algae (BGA) in micrograms per liter using an optical Total Algae-phycoerythrin (TAL-PE) sensor (measurement range of BGA-PE 0-280 ug/L) on a YSI EXO2 multiparameter sonde. The TAL-PE sensor uses a slightly blue excitation beam that excites the phycoerythrin (PE) accessory pigment. Missing values indicate that either no measurement was made, or the data were omitted because it was determined that error due to sensor drift and fouling exceeded the correction threshold as described in the attribute accuracy report.
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.064
Range_Domain_Maximum: 268.148
Attribute_Units_of_Measure: micrograms per liter (ug/L)
Attribute:
Attribute_Label: Water_Elevation_m
Attribute_Definition:
Elevation of the creek surface in meters, adjusted to NAVD88 elevations. Water depth was measured by a Sontek IQ-Plus acoustic doppler current profiler mounted to the bottom of the creek. Water level is determined primarily by using a vertical beam, though an integrated pressure sensor acts as a secondary measurement. The elevation at the top of the instrument surface was measured using real-time kinetic (RTK) GPS. These data are included in Table 2. Water elevation was calculated using the water depth relative to the elevation of the surface of the instrument. The elevation of the ADCP instrument was not directly measured using RTK until January 2015. Prior to that, water level was calculated using the measured elevation of the EXO2 instrument and the mean difference in overlapping depth data from both instruments. Missing values indicate that either no measurement was made, or the data were omitted because it was determined that error exceeded the thresholds outlined in the attribute accuracy report.
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -0.532
Range_Domain_Maximum: 0.783
Attribute_Units_of_Measure: meters
Attribute:
Attribute_Label: Flow_m3s
Attribute_Definition:
Creek surface water discharge in cubic meters per second (m3/s) measured with a Sontek IQ-Plus acoustic doppler current profiler mounted to the bottom of the creek.
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -0.836
Range_Domain_Maximum: 0.778
Attribute_Units_of_Measure: cubic meters per second
Detailed_Description:
Entity_Type:
Entity_Type_Label: EXO_QAQC_Table1
Entity_Type_Definition:
Correction criteria and maximum allowable limits for data corrections
Entity_Type_Definition_Source: Wagner and others, 2006
Attribute:
Attribute_Label: Parameter
Attribute_Definition: The name of the chemical parameter being measured
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Temperature
Enumerated_Domain_Value_Definition: Water temperature in degrees C
Enumerated_Domain_Value_Definition_Source: Producer-defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Conductivity
Enumerated_Domain_Value_Definition: Water conductivity in microsiemens per centimeter
Enumerated_Domain_Value_Definition_Source: Producer-defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: pH
Enumerated_Domain_Value_Definition: Measurement of surface-water pH using a pH/ORP sensor
Enumerated_Domain_Value_Definition_Source: producer-defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Dissolved Oxygen
Enumerated_Domain_Value_Definition:
Dissolved oxygen level in water in milligrams per liter or percent air saturation measured with an optical dissolved oxygen sensor
Enumerated_Domain_Value_Definition_Source: Producer-defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Turbidity
Enumerated_Domain_Value_Definition:
Turbidity in surface water in nephelometric turbidity units NTU measured with an optical turbidity sensor.
Enumerated_Domain_Value_Definition_Source: Producer-defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: fDOM
Enumerated_Domain_Value_Definition:
Surface water measurement of fluorescent dissolved organic matter (fDOM) in parts per billion of Quinine Sulfate Equivalent (QSU) using an optical fDOM sensor
Enumerated_Domain_Value_Definition_Source: Producer-defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Chlorophyll
Enumerated_Domain_Value_Definition:
Surface water measurement of chlorophyll in micrograms per liter using an optical Total Algae-phycoerythrin sensor
Enumerated_Domain_Value_Definition_Source: Producer-defined
Attribute:
Attribute_Label: Data Correction Criteria
Attribute_Definition:
A numeric range of error (in units of measurement or percentage) in sensor readings due to fouling and/or drift beyond which a correction was applied
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:
Unrepresentable_Domain:
The acceptable range of error for each sensor, according to Wagner and others, 2006. If the absolute value of drift plus fouling of each sensor parameter exceeded this range, a correction factor was applied to the data .
Attribute:
Attribute_Label: Maximum allowable limit
Attribute_Definition:
The maximum numerical limit of correction (in units of measurement or percentage of measured value) due to fouling and drift.
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:
Unrepresentable_Domain:
The maximum numerical limit of correction (in units of measurement or percentage of measured value) due to fouling and drift allowable for applying a correction factor, according to Wagner and others, 2006. If error due to fouling and/or drift exceeded this limit, data were removed from the dataset.
Detailed_Description:
Entity_Type:
Entity_Type_Label: CollectionDates_Table2
Entity_Type_Definition:
Data collection date ranges, instrument type and instrument horizontal and vertical positional information
Entity_Type_Definition_Source: producer-defined
Attribute:
Attribute_Label: Instrument Type
Attribute_Definition: The type of instrument used to collect data
Attribute_Definition_Source: producer-defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 1
Enumerated_Domain_Value_Definition: SonTek IQ-Plus Acoustic Doppler Current Profiler
Enumerated_Domain_Value_Definition_Source: producer-defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 2
Enumerated_Domain_Value_Definition: Wetlabs ECO Triplet-w optical sensor
Enumerated_Domain_Value_Definition_Source: producer-defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 3
Enumerated_Domain_Value_Definition: YSI 600 XLM multi-parameter sonde
Enumerated_Domain_Value_Definition_Source: producer-defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 4
Enumerated_Domain_Value_Definition: YSI EXO2 multiparameter sonde; Serial number ending in 2016
Enumerated_Domain_Value_Definition_Source: producer-defined
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 5
Enumerated_Domain_Value_Definition: YSI EXO2 multiparameter sonde; Serial number ending in 1654
Enumerated_Domain_Value_Definition_Source: producer-defined
Attribute:
Attribute_Label: Data Collection Start Date
Attribute_Definition: The date in mm/dd/yyyy of the start of data collection
Attribute_Definition_Source: producer-defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 11/06/2012
Range_Domain_Maximum: 12/31/2016
Attribute_Units_of_Measure: mm/dd/yyyy
Attribute:
Attribute_Label: Data Collection End Date
Attribute_Definition: The date in mm/dd/yyyy of the end of data collection
Attribute_Definition_Source: producer-defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 11/9/2012
Range_Domain_Maximum: 12/31/2016
Attribute_Units_of_Measure: mm/dd/yyyy
Attribute:
Attribute_Label: Parameter measured
Attribute_Definition: The type of data collected
Attribute_Definition_Source: producer-defined
Attribute_Domain_Values:
Unrepresentable_Domain:
Refer to the Attributes section of the Entity "SLPCreekSenorData" for descriptions of measured parameters
Attribute:
Attribute_Label: Latitude_Decimal Degrees
Attribute_Definition: The latitudinal of the sensor position in decimal degrees
Attribute_Definition_Source: producer-defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 41.55460
Range_Domain_Maximum: 41.55465
Attribute_Units_of_Measure: decimal degrees
Attribute:
Attribute_Label: Longitude_Decimal Degrees
Attribute_Definition:
The longitudinal position of the sensor position in decimal degrees with negative values indicating the western hemisphere
Attribute_Definition_Source: producer-defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -70.50710
Range_Domain_Maximum: -70.50713
Attribute_Units_of_Measure: producer-defined
Attribute:
Attribute_Label: Elevation_meters
Attribute_Definition:
Elevation in meters relative to a vertical control point referenced to the North American Vertical Datum of 1988 (NAVD88). A value of NA indicates data not available.
Attribute_Definition_Source: producer-defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -0.7838
Range_Domain_Maximum: -0.5640
Attribute_Units_of_Measure: meters
Overview_Description:
Entity_and_Attribute_Overview:
Citations:
Standard Methods for the Examination of Water and Wastewater (17th ed). American Public Health Association, Washington, D.C, 1989.
ASTM D7315-07a Standard Test Method for Determination of Turbidity Above 1 Turbidity Unit (TU) in Static Mode, ASTM International, West Conshohocken, PA, 2007, www.astm.org.
Wagner, R.J., Boulger, R.W., Jr., Oblinger, C.J., and Smith, B.A., 2006, Guidelines and standard procedures for continuous water-quality monitors—Station operation, record computation, and data reporting: U.S. Geological Survey Techniques and Methods 1-D3, 51 p.
Entity_and_Attribute_Detail_Citation: Adrian Mann
Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: ScienceBase
Contact_Organization: U.S. Geological Survey - ScienceBase
Contact_Address:
Address_Type: mailing and physical
Address: Denver Federal Center, Building 810, Mail Stop 302
City: Denver
State_or_Province: CO
Postal_Code: 80225
Country: US
Contact_Voice_Telephone: 1-888-275-8747
Contact_Electronic_Mail_Address: sciencebase@usgs.gov
Resource_Description:
This dataset contains the the sensor data in CSV format (SLPCreekSensorData.csv), a CSV table of correction criteria and maximum allowable limits for data corrections (EXO_QAQC_Table1.csv), and a CSV table of data collection date ranges, instrument type and instrument horizontal and vertical positional information (CollectionDates_Table2.csv). Additionally, CSDGM metadata describing these tables is available in XML format.
Distribution_Liability:
Neither the U.S. Government, the Department of the Interior, nor the USGS, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: CSV
Format_Information_Content:
The dataset contains the data in CSV (comma-separated values) format, as well as supplemental information in two additional CSV files. CSDGM metadata in XML format describing all three files is also included.
Transfer_Size: 15
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information: Access_Instructions:
The first link downloads all the files on the landing page, the second link is to the landing page itself, and the third link is the DOI link which also points to the landing page of the data.
Fees: none
Metadata_Reference_Information:
Metadata_Date: 20200806
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Adrian G Mann
Contact_Organization: Woods Hole Coastal and Marine Science Center
Contact_Position: Physical Scientist
Contact_Address:
Address_Type: mailing and physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Country: United States
Contact_Voice_Telephone: 508-548-8700
Contact_Electronic_Mail_Address: amann@usgs.gov
Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998

This page is <https://cmgds.marine.usgs.gov/catalog/whcmsc/SB_data_release/DR_P9STIROQ/SLPCreekData_metadata.html>
Generated by mp version 2.9.50 on Tue Sep 21 18:19:40 2021