Metadata: Identification_Information: Citation: Citation_Information: Originator: Brian D. Andrews Publication_Date: 2006 Title: Nahant to Gloucester, sea floor photographs and bottom samples analyses acquired during ground validation sampling Edition: 1.0 Geospatial_Data_Presentation_Form: raster Series_Information: Series_Name: Open File Report Issue_Identification: 2005-1293 Publication_Information: Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, Massachusetts Publisher: U.S. Geological Survey, Coastal and Marine Geology Program Online_Linkage: https://doi.org/10.3133/ofr20051293 Online_Linkage: https://pubs.usgs.gov/of/2005/1293/html/appendix1.html Larger_Work_Citation: Citation_Information: Originator: Walter A. Barnhardt Originator: Brian D. Andrews Originator: Bradford Butman Publication_Date: 2006 Title: High-Resolution Mapping of the Inner Continental Shelf: Nahant to Gloucester, Massachusetts Edition: 1.0 Series_Information: Series_Name: Open-File Report Issue_Identification: 2005-1293 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.3133/ofr20051293 Online_Linkage: https://pubs.usgs.gov/of/2005/1293/ Description: Abstract: This report presents high-resolution maps of the seafloor offshore of Massachusetts, from Nahant to Gloucester. Approximately 134 km² of the inner shelf were mapped with a focus on the nearshore region in water depths less than 40 m. The maps were prepared as part of a cooperative mapping program between the U.S. Geological Survey (USGS) and the Massachusetts Office of Coastal Zone Management (CZM). They are based on marine geophysical data, sediment sampling, and bottom photography obtained on two research cruises carried out in 2003 and 2004. The primary objective of this program is to develop a suite of seafloor maps that provide geologic information for management of coastal and marine resources. Accurate maps of seafloor geology are important first steps toward protecting fish habitat, delineating marine reserves, and assessing environmental changes due to natural or human impacts. The maps also provide a geologic framework for scientific research, industry and the public. Purpose: The remotely-sensed data collected as part of this study were validated with direct sampling of the surficial sediments and photographs of the seafloor. The ground validation portion of the project commenced immediately following the conclusion of the geophysical surveys in May 2004. One hundred target stations were identified prior to the survey for sampling and photography with the USGS Mini SEABed Observation and Sampling System Supplemental_Information: The original report did not include separate metadata files for these data, so the metadata file was created at a later date (2025). Additional information about the activity that acquired the data can be found at: https://cmgds.marine.usgs.gov/services/activity.php?fan=2004-002-FA Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20040506 Ending_Date: 20040508 Currentness_Reference: ground condition of acquistion Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -70.909698 East_Bounding_Coordinate: -70.7068174 North_Bounding_Coordinate: 42.569156 South_Bounding_Coordinate: 42.411826 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:dc680cee-c6b8-4d95-b457-612479c6633a Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: Coastal and Marine Geology Program Theme_Keyword: CMGP Theme_Keyword: Woods Hole Science Center Theme_Keyword: WHSC Theme_Keyword: Seafloor Theme_Keyword: Marine Geology Theme_Keyword: bottom photograph Theme_Keyword: field activity serial number RAFA04002 Theme_Keyword: sea floor photo Theme_Keyword: sediment sample Theme_Keyword: seafloor mapping Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: oceans Theme_Keyword: imageryBaseMapsEarthCover Theme_Keyword: geoscientificInformation Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: sea-floor characteristics Theme_Keyword: image collections Theme_Keyword: grab sampling Theme_Keyword: grain-size analysis Theme_Keyword: marine geology Theme_Keyword: underwater photography Place: Place_Keyword_Thesaurus: None Place_Keyword: Massachusetts Bay Place_Keyword: Atlantic Ocean Place_Keyword: Salem Sound Place_Keyword: Nahant Place_Keyword: Gloucester Place_Keyword: South Essex Ocean Sanctuary Access_Constraints: No access constraints. Please see 'Distribution Information' for details. Use_Constraints: These data are marked with a Creative Commons CC0 1.0 Universal License. These data are in the public domain and do not have any use constraints. Users are advised to read the dataset's metadata thoroughly to understand appropriate use and data limitations. Please recognize the U.S. Geological Survey (USGS) as the source of this information. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Brian Andrews Contact_Organization: U.S. Geological Survey Contact_Position: Marine 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 x2348 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: bandrews@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: https://pubs.usgs.gov/of/2005/1293/images/pict0409.jpg Browse_Graphic_File_Description: Example of a bottom photograph from the study area. Browse_Graphic_File_Type: HOEG Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.722 Data_Quality_Information: Logical_Consistency_Report: Information not available. Completeness_Report: Information not available. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The report indicates that the research vessel occupied the target location (+/- 10 m) for instrument deployment. Additional inaccuracies can probably be included associate with the instrument drifting away from the research vessel. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: The report does not seem to indicate the source of the depth values that are present in the sediment texture analysis data. Lineage: Process_Step: Process_Description: The ground validation portion of the project commenced immediately following the conclusion of the geophysical surveys in May 2004. One hundred target stations were identified prior to the survey for sampling and photography with the USGS Mini SEABed Observation and Sampling System (Mini SEABOSS; Valentine and others, 2000, https://doi.org/10.3133/fs14200). Stations were selected based primarily on the previously collected acoustic backscatter data, with the objective of characterizing broad areas of different backscatter intensity. In addition, the sampling design included investigation of both gradual and sharp transitions in backscatter values, inferred to be differences in substrates. The research vessel occupied the target location (+/- 10 m), deployed the Mini SEABOSS and drifted with the current over the bottom at approximately 1-3 knots. Continuous video was collected while the camera was within sight of the bottom and photographs were obtained from a still camera at user-selected locations along the transect. Samples of the surficial sediment were usually collected at the end of the drift transect. The upper 2 cm of sediment were scraped from the surface of the grab for textural analysis. At each station about 5 minutes of video and about 5 bottom photographs were obtained. Sediment samples were collected at locations with relatively soft sediment (sand or mud) where the Mini SEABOSS would not be damaged. Samples were not collected in cobble or rocky regions. Samples were analyzed for grain size at the USGS Sediment Laboratory. Poppe and Polloni (2000, https://doi.org/10.3133/ofr00358) describe the standard procedure for grain size textural analysis This information was copied from the report to assist in generating this metadata file. Process_Date: 2004 Process_Step: Process_Description: This metadata file was written based on information from within the report and existing metadata. It's possible some elements that should have been removed were not removed. The original publication did not provide metadata for this dataset. Additionally, this metadata file provides links in the distribution section to the Excel spreadsheet of the sample analyses that was part of the ground truthing. That link is available in the report, but not as a separate link on the Appendix 1 - Geographic Information System page. The data is also available as part of the personal geodatabase. Added USGS persistent identifier as theme keyword. (20250923) Process_Date: 20250923 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 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.00001 Longitude_Resolution: 0.00001 Geographic_Coordinate_Units: decimal degrees Geodetic_Model: Horizontal_Datum_Name: D_WGS_1984 Ellipsoid_Name: WGS_1984 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257224 Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: The bottom photos as published do not have spatial information, however the associated image locations and sediment sample files do. No attempt was made to write the detailed entity and attribute information for the sediment texture data. For these data, see Poppe and others (2000, https://doi.org/10.3133/ofr00358) for a description of the procedures for sediment texture analysis. Hastings and others (2000, https://doi.org/10.3133/ofr00358) provide a data dictionary describing the column headings in the Excel spreadsheet SEDBA1_RAFA04002.xls. I believe the dates presented in the file refer to analysis dates. Collection dates are reflected in the field ID through the julian day. For example, STA100JD127 would be May 6, 2004. A total of 585 bottom photographs were obtained at 100 stations for this study. TableA3_1.xls is an excel format file which lists all the bottom photographs grouped by station. Location information is in UTM zone 19 eastings and northings. Entity_and_Attribute_Detail_Citation: U.S. Geological Survey Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: Brian Andrews Contact_Organization: U.S. Geological Survey, Woods Hole Science Center Contact_Position: Marine Geographer Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02543 Country: USA Contact_Voice_Telephone: 508-548-8700 x2348 Resource_Description: The sediment texture analysis data is available as part of the personnal geodatabase (which requires the download of a large folder), or as an Excel spreadsheet (SEDBA1_RAFA04002.xls). The image locations (with eastings and northings) are available in an Excel spreadsheet (tableA3_1.xls) and the bottom photogrphs are available in a single ZIP file (BottomPhotos.ZIP) Distribution_Liability: Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: XLS Format_Information_Content: Excel format spreadsheet. One for the sediment texture analysis and one for the bottom photograph locations. Transfer_Size: 1 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://pubs.usgs.gov/of/2005/1293/tables/tableA3_1.xls Network_Resource_Name: https://pubs.usgs.gov/of/2005/1293/tables/SEDBA1_RAFA04002.xls Network_Resource_Name: https://pubs.usgs.gov/of/2005/1293/html/appendix3.html Network_Resource_Name: https://pubs.usgs.gov/of/2005/1293/html/appendix1.html Network_Resource_Name: https://doi.org/10.3133/ofr20051293 Access_Instructions: The first link will download the bottom photograph image locations (with locations in UTM zone 19 eastings and northings), the second link will download the sediment texture analyses data, the third link is to the page with more information about the bottom photographs, the fourth link is to the GIS page where the personal geodatabase and other GIS data are available, and the fifth link is to the DOI landing page of the report. Offline_Option: Offline_Media: DVD-ROM Recording_Capacity: Recording_Density: 4.75 Recording_Density_Units: Gbytes Recording_Format: UDF Digital_Form: Digital_Transfer_Information: Format_Name: JPEG Format_Information_Content: A ZIP file containing 585 bottom photographs. Transfer_Size: 630 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://pubs.usgs.gov/of/2005/1293/zip/BottomPhotos.ZIP Network_Resource_Name: https://pubs.usgs.gov/of/2005/1293/html/appendix1.html Network_Resource_Name: https://doi.org/10.3133/ofr20051293 Access_Instructions: The first link is to download a zip file of the images, the second is to the appendix containing access to all the GIS data, and the third link is to the DOI landing page of the report. Fees: None Technical_Prerequisites: The user must be capable of uncompressing the zip file and reading the Excel formatted data.. Metadata_Reference_Information: Metadata_Date: 20250923 Metadata_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: 02543-1598 Country: USA Contact_Voice_Telephone: (508) 548-8700 x2251 Contact_Facsimile_Telephone: (508) 457-2310 Contact_Electronic_Mail_Address: whsc_data_contact@usgs.gov Contact_Instructions: The metadata contact email address is a generic address in the event the person is no longer with the U.S. Geological Survey. Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998