U.S. Geological Survey
2017
Suspended-sediment concentration (SSC) and loss-on-ignition (LOI) data from water samples collected in 2014-15 by the U.S. Geological Survey in Chincoteague Bay, Maryland and Virginia
1.0
Comma-separated values (CSV)
data release
DOI:10.5066/F7WD3XSF
Woods Hole Coastal and Marine Science Center, Woods Hole, MA
U.S. Geological Survey, Coastal and Marine Geology Program
https://doi.org/10.5066/F7WD3XSF
https://cmgds.marine.usgs.gov/data/field-activity-data/2014-048-FA/data/chemistry/2014-048-FA_watersamples.zip
Steven E. Suttles
Neil K. Ganju
Sandra M. Brosnahan
Ellyn T. Montgomery
Patrick J. Dickhudt
Jonathan Borden
Marinna A. Martini
2017
Water samples in support of oceanographic and water-quality measurements in Chincoteague Bay, Maryland and Virginia, 2014-15, U.S. Geological Survey Field Activity 2014-048-FA
1.0
data release
DOI:10.5066/F7WD3XSF
Reston, VA
U.S. Geological Survey
Suggested citation: Suttles, S.E., Ganju, N.K., Brosnahan, S.M., Montgomery, E.T., Dickhudt, P.J., Borden, J, and Martini, M.A, 2017, Water samples in support of oceanographic and water-quality measurements in Chincoteague Bay, Maryland and Virginia 2014-2015, U.S. Geological Survey Field Activity 2014-048-FA: U.S. Geological Survey data release, https://doi.org/10.5066/F7WD3XSF.
https://doi.org/10.5066/F7WD3XSF
U.S. Geological Survey scientists and technical support staff measured oceanographic, water quality, seabed elevation change, and meteorological parameters in Chincoteague Bay, Maryland and Virginia, during the period of August 13, 2014 to July 14, 2015 as part of the Estuarine Physical Response (EPR) to Storms project (GS2-2D) supported by the Department of the Interior Hurricane Sandy Recovery program. These measurements provide time series and supplemental data to quantify the response and understand the resilience of this back-barrier estuarine system to storm events. The Assateague Island National Seashore (U.S. National Park Service) and the Chincoteague National Wildlife Refuge (U.S. Fish and Wildlife Service) are both situated on the east side of Chincoteague Bay, and serve as the barrier between Chincoteague Bay and the Atlantic Ocean as well as providing globally important migratory bird habitat and a popular recreation destination.
These suspended-sediment concentration (SSC) and loss-on-ignition (LOI) data from water samples collected in Chincoteague Bay, Maryland and Virginia supplement oceanographic and water-quality time-series measurements for the EPR project. Specifically, the SSC data are used to estimate the relationship between suspended mass and optical turbidity measurements, and the LOI data provide an estimate of the organic content of the suspended sediment.
For more information on the field activity, see https://cmgds.marine.usgs.gov/fan_info.php?fan=2014-048-FA.
20140813
20150714
Ground condition. Water samples were collected on the initial deployment cruise (2014-048-FA) from 20140813 - 20140816, and three subsequent instrument servicing trips (20141014-20141022, 20150118-20150125, and 20150420-20150428).
None planned.
-75.500
-75.020
38.350
37.800
None
U.S. Geological Survey
USGS
Woods Hole Coastal and Marine Science Center
WHCMSC
Coastal and Marine Geology Program
CMGP
water samples
suspended sediment concentration (SSC)
loss on ignition (LOI)
field activity number 2014-048-FA
ISO 19115 Topic Category
oceans
inlandWaters
environment
geoscientificInformation
None
Chincoteague Bay
Maryland
Virginia
Assateague Island
Assateague National Seashore
Chincoteague Island
Chincoteague National Wildlife Refuge
Chincoteague Inlet
Tom's Cove
Wallops Island
Greenbackville
Public Landing
Newport Bay
Sinepuxent Bay
None.
Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey as the originator of the dataset.
U.S. Geological Survey
Steven E. Suttles
Mechanical Engineer
mailing
384 Woods Hole Road
Woods Hole
Massachusetts
02543-1598
USA
508-548-8700 x2228
508-457-2310
ssuttles@usgs.gov
https://cmgds.marine.usgs.gov/data/field-activity-data/2014-048-FA/data/Chincoteague_allsensors_allsites_calfit.pdf
Browse graphic plot showing suspended-sediment concentration (SSC) from analyzed water samples to in situ measured turbidity from deployed instruments in Chincoteague Bay during 2014-15 study by U.S. Geological Survey. Model fit to data is found using a repeated median regression line. NTU, nephelometric turbidity units; mg/l, milligrams per liter. The turbidity measurements are from Suttles, S.E., Ganju, N.K., Brosnahan, S.M., Montgomery, E.T., Dickhudt, P.J., Borden, Jonathan, and Martini, M.A., 2016, Oceanographic and water-quality measurements in Chincoteague Bay, Maryland/Virginia, 2014 - 2015: U.S. Geological Survey data release, https://doi.org/10.5066/F7DF6PBV.
PNG
Steven E. Suttles
Neil K. Ganju
Sandra M. Brosnahan
Ellyn T. Montgomery
Patrick J. Dickhudt
Jonathan Borden
Marinna A. Martini
2016
Oceanographic and water-quality measurements in Chincoteague Bay, Maryland/Virginia, 2014-2015
1.0
data release
DOI:10.5066/F7DF6PBV
Reston, VA
U.S. Geological Survey
https://dx.doi.org/10.5066/F7DF6PBV
Steven E. Suttles
Neil K. Ganju
Sandra M. Brosnahan
Ellyn T. Montgomery
Patrick J. Dickhudt
Alexis Beudin
Daniel J. Nowacki
Marinna A. Martini
2017
Summary of Oceanographic and water-quality measurements in Chincoteague Bay, Maryland and Virginia, 2014-15
1.0
Open-File Report
2017-1032
Reston, VA
U.S. Geological Survey
https://doi.org/10.3133/ofr20171032
Marvin J. Fishman
Linda C. Friedman
1989
Methods for determination of inorganic substances in water and fluvial sediments
Third
Techniques of Water-Resources Investigations (TWRI)
Book 5, Chapter A1
Reston, VA
U.S. Geological Survey
Water samples were collected using a van Dorn sampler, and processed for suspended-sediment concentration (SSC) and loss-on-ignition (LOI) following USGS methods (Fishman and Friedman, 1989). The two main results from the water sample analysis are the suspended-sediment concentration (SSC) in grams/liter and loss-on-ignition (LOI) expressed as the fraction of volatile solids to total solids retained on a filter(s). Water samples were stored in a refrigerated and dark location, and were filtered within one month of collection. The entire volume of each water sample was filtered to avoid sub-sampling errors. Deionized water was put through each filter as the last step of the filtration process to rinse dissolved salts from the filter. Standard laboratory protocols (Fishman and Friedman, 1989) were followed to ensure thorough drying and accurate weighing of samples. SSC results were compared to turbidity readings from deployed sensors, and were found to be highly correlated (R^2=0.93, n=97).
This data set represents a total of 117 water samples and associated analyses. A total of nine water samples collected for this project are not part of these results. Three were collected on 20150125 at the Public Landing, Maryland pier and were not included because of insufficient metadata and lack of paired turbidity sensor data. The remaining six water samples were collected on 20150712 during the final deployed instrument recovery operation; these samples were not processed within the allowed time so they were discarded.
Horizontal position was determined using a Garmin GPSMAP 78sc handheld GPS. The expected absolute, horizontal accuracy is stated to be 3 to 5 m at the 95% confidence level using the WAAS setting. Additional sources of error in the position for the water sample locations are caused by the offset from the deployed instrument location and the exact location of the van Dorn water sampler at the time the sample was taken, which could be as large as 20 m; therefore overall expected accuracy of the reported horizontal position for these water sample locations is on the order of 25 m or better.
Total water column depth values at each sample site were determined from one of these three methods: 1) depth sounder (from boat), 2) physical measurement with calibrated pole or measuring tape, or 3) pressure data (atmospherically corrected) from deployed pressure sensor at time of sample. Sample depths were determined by markings on the lowering line for the van Dorn sampler, and the samples were typically between 0.25 and 0.75 m above the seabed. Depths given were taken from the water surface at time of sample, and were not referenced to a fixed datum. Expected accuracy of depth measurements is 0.5 m or better.
Deployment sample collection: Collect 31 water samples using van Dorn water sampler at deployed instrument sites in Chincoteague Bay from 20140813 - 20140816.
20140816
U.S. Geological Survey
Steven E. Suttles
Mechanical Engineer
mailing
384 Woods Hole Road
Woods Hole
Massachusetts
02543-1598
USA
508-548-8700 x2228
ssuttles@usgs.gov
Filter water samples at the USGS Woods Hole Science Center using 47mm, 1.5 micron pore size, pre-weighed, pre-volatilized 934-AH glass fiber filters. Entire sample volume is filtered, if necessary split between multiple filters if solids load is too much for a single filter. A final rinse is made using deionized water to wash out dissolved salts from each filter. Determine suspended-sediment concentration (SSC) using "Solids, residue at 105 C, suspended, gravimetric" method from Fishman and Friedman (1989). Determine loss-on-ignition (LOI) using method "Solids, volatile-on-ignition, suspended, gravimetric from Fishman and Friedman (1989). ATI Cahn C-44 micro-balance is used to weigh filters.
20140819
U.S. Geological Survey
Thomas (Wally) Brooks
Research Technician
mailing
384 Woods Hole Road
Woods Hole
Massachusetts
02543-1598
USA
508-548-8700 x2359
wallybrooks@usgs.gov
First servicing sample collection: Collect 35 water samples using van Dorn water sampler at deployed instrument sites in Chincoteague Bay from 20141014 - 20141022. This was during the first turnaround where deployed instruments were recovered, downloaded, cleaned, and batteries and anti-fouling controls refreshed as necessary. Nine of the samples were collected at the end of the first deployment (A) period and the remaining 26 after the instruments were serviced and re-deployed for the beginning of the second deployment (B).
20141022
U.S. Geological Survey
Steven E. Suttles
Mechanical Engineer
mailing
384 Woods Hole Road
Woods Hole
Massachusetts
02543-1598
USA
508-548-8700 x2228
ssuttles@usgs.gov
Filter water samples, collected between 20141014 20141022 using 47mm, 1.5 micron pore size, pre-weighed, pre-volatilized 934-AH glass fiber filters, at the USGS Woods Hole Science Center. Entire sample volume is filtered, if necessary split between multiple filters if solids load is too much for a single filter. A final rinse is made using deionized water to wash out dissolved salts from each filter. Determine suspended-sediment concentration (SSC) using "Solids, residue at 105 C, suspended, gravimetric" method from Fishman and Friedman (1989). Determine loss-on-ignition (LOI) using method "Solids, volatile-on-ignition, suspended, gravimetric from Fishman and Friedman (1989). ATI Cahn C-44 micro-balance is used to weigh filters.
20141028
U.S. Geological Survey
Thomas (Wally) Brooks
Research Technician
mailing
384 Woods Hole Road
Woods Hole
Massachusetts
02543-1598
USA
508-548-8700 x2359
wallybrooks@usgs.gov
Second servicing sample collection: Collect 31 water samples using van Dorn water sampler at deployed instrument sites and pier site in Chincoteague Bay from 20150118 - 20150125. This was during the second turnaround where deployed instruments were recovered, downloaded, cleaned, and batteries and anti-fouling controls refreshed as necessary. Nine of the samples were collected at the end of the second deployment (B) period and 19 after the instruments were serviced and re-deployed for the beginning of the third deployment (C). An additional 3 samples were collected at the public pier at Public Landing, MD on 20150125. A Wet Labs ECO-NTUSB turbidity sensor was deployed with the van Dorn water sampler for the 3 samples at the Public Landing pier, but the turbidity sensor did not collect valid data during the sampling (note: results of these 3 samples are not reported).
20150125
U.S. Geological Survey
Steven E. Suttles
Mechanical Engineer
mailing
384 Woods Hole Road
Woods Hole
Massachusetts
02543-1598
USA
508-548-8700 x2228
ssuttles@usgs.gov
Filter water samples collected between 20150118 20150125 using 47mm, 1.5 micron pore size, pre-weighed, pre-volatilized 934-AH glass fiber filters, at the USGS Woods Hole Science Center. Entire sample volume is filtered, if necessary split between multiple filters if solids load is too much for a single filter. A final rinse is made using deionized water to wash out dissolved salts from each filter. Determine suspended-sediment concentration (SSC) using "Solids, residue at 105 C, suspended, gravimetric" method from Fishman and Friedman (1989). Determine loss-on-ignition (LOI) using method "Solids, volatile-on-ignition, suspended, gravimetric from Fishman and Friedman (1989). ATI Cahn C-44 micro-balance is used to weigh filters.
20150206
U.S. Geological Survey
Thomas (Wally) Brooks
Research Technician
mailing
384 Woods Hole Road
Woods Hole
Massachusetts
02543-1598
USA
508-548-8700 x2359
wallybrooks@usgs.gov
Third servicing sample collection: Collect 23 water samples using van Dorn water sampler at deployed instrument sites and pier/dock site in Chincoteague Bay from 20150420 - 20150428. This was during the third turnaround where deployed instruments were recovered, downloaded, cleaned, and batteries and anti-fouling controls refreshed as necessary. Seven of the samples were collected at the end of the third deployment (C) period and 12 after the instruments were serviced and re-deployed for the beginning of the fourth deployment (D). An additional 4 samples were collected at a pier/dock of rental house in Greenbackville, VA on 20150420. A Wet Labs ECO-NTUSB turbidity sensor was deployed with the van Dorn water sampler for the 4 pier/dock samples in effort capture some higher suspended-sediment events that are hard to capture at the deployed instrument sites located in the open waters of Chincoteague Bay.
20150428
U.S. Geological Survey
Steven E. Suttles
Mechanical Engineer
mailing
384 Woods Hole Road
Woods Hole
Massachusetts
02543-1598
USA
508-548-8700 x2228
ssuttles@usgs.gov
Filter water samples collected between 20150420 20150428 using 47mm, 1.5 micron pore size, pre-weighed, pre-volatilized 934-AH glass fiber filters, onsite at the rental house in Greenbackville, VA. Entire sample volume is filtered, if necessary split between multiple filters if the solids load is too much for a single filter. A final rinse is made using deionized water to wash out dissolved salts from each filter.
20150428
U.S. Geological Survey
Sandra Brosnahan
Physical Scientist
mailing
384 Woods Hole Road
Woods Hole
Massachusetts
02543-1598
USA
508-548-8700 x2359
sbrosnahan@usgs.gov
Determine suspended-sediment concentration (SSC) using "Solids, residue at 105 C, suspended, gravimetric" method from Fishman and Friedman (1989). Determine loss-on-ignition (LOI) using method "Solids, volatile-on-ignition, suspended, gravimetric from Fishman and Friedman (1989). Laboratory analyses conducted at University of Maryland Center for Environmental Science, Horn Point Laboratory using a Mettler Toledo AT250 balance to weigh filters.
20150615
University of Maryland Center for Environmental Science, Horn Point Laboratory (UMCES-HPL)
Erika Kiss
Faculty Research Assistant/Analytical Lab Manager
mailing
P.O. Box 775
Cambridge
Maryland
21613
USA
410-221-8317
ekiss@umces.edu
Recovery sample collection: Collect 6 water samples using van Dorn water sampler at deployed instrument sites prior to final instrument recovery. Note: these samples were ultimately discarded because too much time had passed before the opportunity to filter them (> 1 month); therefore these samples are not in the dataset.
20150712
U.S. Geological Survey
Steven E. Suttles
Mechanical Engineer
mailing
384 Woods Hole Road
Woods Hole
Massachusetts
02543-1598
USA
508-548-8700 x2228
ssuttles@usgs.gov
Use Microsoft Excel (2013 professional) spreadsheet to compile all laboratory analysis of suspended-sediment concentration (SSC) and loss-on-ignition (LOI) from collected water samples in Chincoteague Bay Maryland and Virginia during 2014-15. Add sample locations (latitude/longitude) to the compiled tabular results spreadsheet. Export results spreadsheet to comma-separated values (csv) file format.
2016
U.S. Geological Survey
Steven E. Suttles
Mechanical Engineer
mailing
384 Woods Hole Road
Woods Hole
Massachusetts
02543-1598
USA
508-548-8700 x2228
ssuttles@usgs.gov
Point
0.00001
0.00001
decimal degrees
D_WGS_1984
WGS_1984
6378137.000000
298.257224
None. Measurements taken from water surface at time of sample.
0.05
meters
Attribute values
2014-048-FA_watersamples
Suspended-sediment concentration (SSC) and loss-on-ignition (LOI) analysis of collected water samples.
U.S. Geological Survey
Sample ID
sample identification. Format is stationid_sample number_filter split number (if needed).
U.S. Geological Survey
Character set (text).
Station ID
station identification (or site name). CB, Chincoteague Bay.
U.S. Geological Survey
Character set (text).
Sample Date
calendar date (mm/dd/yyyy) when water sample was collected.
U.S. Geological Survey
Character set (text).
Sample time (UTC)
Time in universal coordinated time (UTC) time zone and 24 hour format HH:MM, when water sample was collected.
U.S. Geological Survey
Character set (text).
Latitude (degrees)
Latitude coordinate, in decimal-degrees, of sample location. South latitude recorded as negative values.
U.S. Geological Survey
37.8670
38.2592
decimal degrees
Longitude (degrees)
Longitude coordinate, in decimal degrees, of sample location. West longitude is recorded as negative values.
U.S. Geological Survey
-75.4220
-75.1395
decimal degrees
Total Depth (m)
Total water depth at time of sample.
U.S. Geological Survey
0.75
2.5
meters
Sample Depth (m)
Depth of water sample collection.
U.S. Geological Survey
0.3
2.0
meters
Filter number
Unique filter identification (number or character).
U.S. Geological Survey
Character set (text).
Filter Weight (g)
Weight of filter only, i.e. prior to filtering sample.
U.S. Geological Survey
0.1074
0.1310
grams
Sample Volume (ml)
Volume of water sample passed through the filter. Blank space indicates additional filter for sample that required more than one filter. Total volume for sample is reported on first filter used for a sample.
U.S. Geological Survey
335
561
milliliters
Dried at 105C Weight 1 (g)
Mass from first dry weighing of filter plus residue retained on filter from sample after filtering and drying.
U.S. Geological Survey
0.1124
0.1710
grams
Dried at 105C Weight 2 (g)
Mass from second (optional) dry weighing of filter plus residue retained on filter from sample after filtering and drying. A blank indicates there was not a second weighing.
U.S. Geological Survey
0.1143
0.1710
grams
Muffled at 550C Weight 1 (g)
Mass from first weighing of filter plus residue after combustion in muffle furnace to remove volatile solids from residue retained on filter.
U.S. Geological Survey
0.1122
0.1672
grams
Muffled at 550C Weight 2 (g)
Mass from second (optional) weighing of filter plus residue after combustion in muffle furnace to remove volatile solids from residue retained on filter. A blank indicates there was not a second weighing.
U.S. Geological Survey
0.1132
0.1672
grams
Dried Sediment Mass (g)
Mass of dried residue on filter = Dried weight - Filter weight.
U.S. Geological Survey
0.0006
0.0587
grams
Muffled Sediment Mass (g)
Mass of muffled (combusted) residue on filter = Muffled weight - Filter weight. This represents the mass of the non-volatile solids retained on the filter.
U.S. Geological Survey
0.0004
0.0549
grams
Mass LOI (g)
Mass of volatile solids retained on the filter that were removed when combusted (loss-on-ignition) = Dried Sediment Mass - Muffled Sediment Mass.
U.S. Geological Survey
0.0002
0.0056
grams
Fraction LOI
Ratio of mass of retained solids that were removed when combusted (loss-on-ignition) to the total mass of dried solids retained on the filter= Mass LOI/Dried Sediment Mass
U.S. Geological Survey
0.0647
0.5692
dimensionless
Total Dried Sediment Mass (g)
Sum of Dried Sediment Mass for all filters used for a single water sample. Same as Dried Sediment Mass if only one filter was used for a sample. A blank indicates an additional filter for a sample that had to be split on to more than one filter.
U.S. Geological Survey
0.0006
0.0954
grams
Total Muffled Sediment Mass (g)
Sum of Muffled Sediment Mass for all filters used for a single water sample. Same as Muffled Sediment Mass if only one filter was used for a sample. A blank indicates an additional filter for a sample that had to be split on to more than one filter.
U.S. Geological Survey
0.0004
0.0864
grams
Total Mass LOI (g)
Sum of LOI Mass (loss-on-ignition) for all filters used for a single water sample. Same as LOI Mass if only one filter was used for a sample. A blank indicates an additional filter for a sample that had to be split on to more than one filter.
U.S. Geological Survey
0.0002
0.00955
grams
Total Fraction LOI
Ratio of total mass of retained solids that were removed when combusted (loss-on-ignition) to the total mass of dried solids retained on filter(s) for a sample = (Total Mass LOI) / (Total Dried Sediment Mass). A blank indicates an additional filter for a sample that had to be split on to more than one filter.
U.S. Geological Survey
0.065
0.57
dimensionless
SSC (g l-1)
Suspended sediment concentration (SSC) for a sample = (Total Dried Sediment Mass) / (Sample Volume). A blank indicates an additional filter for a sample that had to be split on to more than one filter.
U.S. Geological Survey
0.0011
0.1767
grams per liter
Inorganic SSC (g l-1)
Suspended sediment concentration (SSC) of inorganic solids in a sample = (Total Muffled Mass) / (Sample Volume).
U.S. Geological Survey
0.0007
0.16
grams per liter
Filtration Date
calendar date (mm/dd/yyyy) when sample was filtered.
U.S. Geological Survey
Character set (text).
Comments
Comments and/or notes for the sample. This can included instrument type collecting simultaneous in situ turbidity data and when sample was acquired (relative to deployment). Not every sample will have comments.
U.S. Geological Survey
Character set (text).
These data are available in a CSV format. The first line of the CSV file is a header line and those labels are the same as defined in the attribute section.
U.S. Geological Survey
U.S. Geological Survey
Steven E. Suttles
Mechanical Engineer
mailing
384 Woods Hole Road
Woods Hole
Massachusetts
02543
USA
508-548-8700 x2228
508-457-2310
ssuttles@usgs.gov
USGS data release 2014-048-FA contains laboratory analyses for suspended sediment concentration (SSC) and loss-on-ignition (LOI) of collected water samples in Chincoteague Bay, Maryland and Virginia in 2014-15 (2014-048-FA_watersamples.zip). The zip file contains the following files: 2014-048-FA_watersamples.csv (data in a comma-separated text file), and FGDC CSDGM metadata in XML, text and HTML formats.
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.
CSV
exported from Microsoft Excel version 2013 as comma-separated values (CSV) file.
The zip file (created using 7z v15.14, windows 64 bit) contains the CSV data file, and associated metadata for water samples analyzed for suspended-sediment concentration (SSC) and loss-on-ignition (LOI) from Chincoteague Bay, Maryland and Virginia in 2014-15.
0.1
https://cmgds.marine.usgs.gov/data/field-activity-data/2014-048-FA/data/chemistry/2014-048-FA_watersamples.zip
https://doi.org/10.5066/F7WD3XSF
None.
This zip file contains data available in CSV format. The user must have software capable of uncompressing the zip file and reading the data formats.
20170525
U.S. Geological Survey
Steven E. Suttles
Mechanical Engineer
mailing
384 Woods Hole Road
Woods Hole
Massachusetts
02543
USA
508-548-8700 x2228
508-457-2310
ssuttles@usgs.gov
FGDC Content Standards for Digital Geospatial Metadata
FGDC-STD-001-1998