Gaps in sequential photo numbers exist. Photographs accidentally acquired on deck or in the water column were not included in this dataset.
A total of 300 photographs acquired at 48 planned sample stations within the Red Brook Harbor survey area are included in this dataset. The sea floor composition prohibited acquiring sediment samples at seven of the planned sample stations, so in these instances photographs do not have a corresponding sediment sample. Photography and sediment samples were collected with the USGS Mini-SEABOSS sampling device. Photographs accidentally acquired on deck or in the water column were not included in this dataset.
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Horizontal positions for photographs were provided by a Differential Global Positioning System (DGPS) with an estimated accuracy of ± 2 meters. However, the recorded position of each photograph is actually the position of the DGPS antenna on the survey vessel, not the Mini-SEABOSS sampler. The Mini-SEABOSS was deployed approximately 5 meters astern of the DGPS antenna, off the starboard side of the R/V Rafael. In addition to this 5-meter offset, currents may have caused the Mini-SEABOSS to drift horizontally from the survey vessel. Based on the various horizontal offsets, a conservative estimate for the horizontal accuracy of the Mini-SEABOSS locations for the Red Brook Harbor survey is 10-15 meters.
Source_Information:
Source_Citation:
Citation_Information:
Originator:
The source information was incomplete and had to be modified to meet the standard. Assumed to be USGS.
Publication_Date: unknown
Title: Information unavailable from original metadata.
Type_of_Source_Media: Information unavailable from original metadata.
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20091116
Ending_Date: 20091117
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: Information unavailable from original metadata.
Source_Contribution:
Bottom photos and corresponding sediment samples were collected with the USGS Mini-SEABOSS sampling device. In areas where sediment sampling was not possible due to the seafloor composition, photos were still acquired. Half of the 48 planned photo and sample locations were chosen based on interferometric sonar backscatter intensity values, with a focus on collecting ground-truth data in areas of transition between high and low backscatter, and areas of homogeneous backscatter. The remaining 24 sample locations were chosen by a randomized GIS routine. In addition to being used for ground-truthing the Red Brook Harbor geophysical data, these photos and samples will be used in future habitat modeling efforts. Each bottom photo point is hotlinked to a corresponding JPEG image and has an attribute that identifies its corresponding sediment sample.
Process_Step:
Process_Description:
Using Cygwin/X (version 1.1), DGPS nav positions were extracted from each HYPACK raw file (grep) (HYPACK DEV 1, POS 1) and compiled into a single nav file (cat) for both bottom sample survey days. Duplicate times were removed (awk) from each file, resulting in 1-second nav points.
Process_Date: 2010
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Aaron Turecek
Contact_Organization: U.S. Geological Survey
Contact_Position: Geographer
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2230
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: aturecek@usgs.gov
Process_Step:
Process_Description:
In Cygwin/X (version 1.1), time stamps in the nav files from the previous processing step were converted from HYPACK time (seconds after midnight) to UTC (hours, minutes and seconds).
Process_Date: 2010
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Aaron Turecek
Contact_Organization: U.S. Geological Survey
Contact_Position: Geographer
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2230
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: aturecek@usgs.gov
Process_Step:
Process_Description:
All 313 bottom photos (JPEG) were visually reviewed. A total of 300 high quality photos were retained after mis-triggered and poor quality photos were removed. Index files with photo name and acquisition time (as recorded by camera system, UTC in the EXIF header of the image) in hours, minutes and seconds, were created in Cygwin/X (version 1.1) for both survey days ($ ls --full-time *JPG > index.txt; grep index.txt for file name and time).
Process_Date: 2010
Source_Produced_Citation_Abbreviation: JPEG photographs
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Aaron Turecek
Contact_Organization: U.S. Geological Survey
Contact_Position: Geographer
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2230
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: aturecek@usgs.gov
Process_Step:
Process_Description:
The 1-second nav files were imported into ArcMap (version 9.3) as event themes (UTM, zone 19, WGS84, meters), and converted to shapefiles. The photo index files from the previous processing step were imported into ArcMap (version 9.3), and joined with the 1-second nav files by their respective time fields. The nav points that were joined with a photo were exported to new shapefiles, and then merged into one final bottom photo shapefile. The following fields were added and populated: PICNAME, TIME, JULDAY, YEAR, HOTLINK, SURVEYID, DEVICEID, VEHICLEID, and SEDSAMPLE. The final bottom photos shapefile was reprojected from UTM (zone 19, meters, wgs84) projection to Geographic (WGS 1984).
Process_Date: 2010
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Aaron Turecek
Contact_Organization: U.S. Geological Survey
Contact_Position: Geographer
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2230
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: aturecek@usgs.gov
Process_Step:
Process_Description:
Edits to the metadata were made to fix any errors that MP v 2.9.32 flagged. This is necessary to enable the metadata to be successfully harvested for various data catalogs. In some cases, this meant adding text "Information unavailable" or "Information unavailable from original metadata" for those required fields that were left blank. Other minor edits were probably performed (title, publisher, publication place, etc.). Fixed URL in abstract. The source information was incomplete and had to be modified to meet the standard. The link to the data in the Distribution_Information section had to be fixed. The metadata date (but not the metadata creator) was edited to reflect the date of these changes. The metadata available from a harvester may supersede metadata bundled within a download file. Compare the metadata dates to determine which metadata file is most recent.
Process_Date: 20160415
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
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Contact_Voice_Telephone: 508-548-8700 x2251
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: vatnipp@usgs.gov
Process_Step:
Process_Description: USGS Thesaurus keywords added to the keyword section.
Process_Date: 20180720
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
Process_Step:
Process_Description: Crossref DOI link was added as the first link in the metadata.
Process_Date: 20191118
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
Process_Step:
Process_Description:
Added keywords section with USGS persistent identifier as theme keyword.
Process_Date: 20200908
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