Nahant to Gloucester, Massachusets Depth to Bedrock (bedrock_depth)

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Metadata:

Identification_Information
Data_Quality_Information
Spatial_Data_Organization_Information
Spatial_Reference_Information
Distribution_Information
Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Brian Andrews
Publication_Date: 2005
Title:

Nahant to Gloucester, Massachusets Depth to Bedrock (bedrock_depth)

Geospatial_Data_Presentation_Form: raster digital data
Series_Information:

Series_Name: Open File Report
Issue_Identification: 2005-1293

Publication_Information:

Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA
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
Online_Linkage: https://pubs.usgs.gov/of/2005/1293/
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

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://pubs.usgs.gov/of/2005/1293/

Description:

Abstract:

These data are high-resolution seismic reflection profile data of the seafloor offshore of Massachusetts, from Nahant to Gloucester. Approximately 1,175 kms of seismic reflection profile data were collected using a Knudsen 320b chirp system
Data were processed using SIOSEIS (Scripps Institute of Oceanography) and Seismic Unix (Colorado School of Mines) to produce segy files and jpg images of the profiles. Data were then imported into Landmark SeisWorks, an interactive computer system where horizons were interpreted and digitized to calculate depth to reflectors below the seafloor. Interpreted depth to reflectors were calculated, exported every 5 shots, and then imported to ArcGIS for interpolation into a 50-m raster grid. These data were used to generate a sediment isopach map, which shows the total thickness of sediment that overlies bedrock

Purpose:

These data were collected under a cooperative agreement with the Massachusetts Office of Coastal Zone Management (CZM) and the U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Science Center. High resolution bathymetry, backscatter intensity, and seismic profile data were collected over 127 km² area covering a portion of the South Essex Ocean Sanctuary to characterize the surface and subsurface of the seafloor for regional geologic framework investigations.
Bathymetric data were collected during two different surveys. Survey RAFA03007 began Monday, 22 Sep 2003 (JD267) and ended on Tuesday, 14 Oct 2003 (JD287). RAFA04002 began 17 Apr 2004 (JD 108) and ended on 2 May 2004 (JD123).

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20030922
Ending_Date: 20040507

Currentness_Reference:

ground condition of 2 separate events: 20030922 to 20031015 and 20040412 to 20040507

Status:

Progress: Complete
Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -70.920415
East_Bounding_Coordinate: -70.688114
North_Bounding_Coordinate: 42.572416
South_Bounding_Coordinate: 42.399158

Keywords:

Theme:

Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:45223c38-763f-448c-93ba-62c8c791ae9f

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: Seismic Reflection Profile
Theme_Keyword: Knudsen
Theme_Keyword: ArcGIS Raster
Theme_Keyword: field activity serial number RAFA03007
Theme_Keyword: field activity serial number RAFA04002
Theme_Keyword: depth to bedrock
Theme_Keyword: bedrock
Theme_Keyword: isopach

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: oceans
Theme_Keyword: elevation
Theme_Keyword: imageryBaseMapsEarthCover

Theme:

Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: geologic structure
Theme_Keyword: scientific interpretation
Theme_Keyword: marine geophysics
Theme_Keyword: geospatial datasets

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

Stratum:

Stratum_Keyword_Thesaurus: None
Stratum_Keyword: subsurface

Temporal:

Temporal_Keyword_Thesaurus: None
Temporal_Keyword: 2003
Temporal_Keyword: 2004

Access_Constraints: None
Use_Constraints:

Data are not intended for navigational use.
These data should not be used at resolutions for which it is not intended.
Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. 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

Native_Data_Set_Environment:

Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.0.0.535

Data_Quality_Information:

Logical_Consistency_Report:

These data have not been quantitatively compared to previous hydrographic data, although they generally agree with qualitative comparison of published NOAA charts.

Completeness_Report: Information unavailable from original metadata.
Positional_Accuracy:

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

Seismic data are not corrected for tides. The bedrock depth (sediment thickness) is calculated as the distance between the bedrock and the seafloor from interpretation of seismic reflection profiles.

Lineage:

Process_Step:

Process_Description:

Seismic profiles were interpreted in Landmark software. Each seismic profile was reviewed and acoustic reflectors were digitized.

Process_Date: unknown

Process_Step:

Process_Description:

Interpreted horizons were exported as x,y,z (depth to reflector) and then imported to ArcGIS as point feature class for interpolation using Geostatistical Analyst.

Process_Date: unknown

Process_Step:

Process_Description:

Shot data with depth to reflector was interpolated using ArcGIS Geostatistical Analyst with the following parameters
Selected Method: Universal Kriging Output: Prediction Map
Number of datasets currently in use: 1
Number of Points: 326304
Order of Trend: Const (Estimated by Global Polynomial Interpolation)
Semivariogram/Covariance: Model: 69.118*Spherical(1625.9)+31.914*Nugget Error modeling: Microstructure: 31.914 (100%) Measurement error: 0 (0%)
Searching Neighborhood: Neighbors to Include: 9 or at least 4 for each angular sector Searching Ellipse: Angle: 0 Major Semiaxis: 1625.9 Minor Semiaxis: 162

Process_Date: unknown

Process_Step:

Process_Description:

Edits to the metadata were made to fix any errors that MP v 2.9.36 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.). Added the link to the data catalog page in the Identification section. The link to the larger work citation had to be fixed. Added the online link to the data in the distribution section. The distribution format name was modified in an attempt to be more consistent with other metadata files of the same data format. The depth system definition was incomplete. Generic values (such as 9999) were used to meet the standard. 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: 20171222
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: 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

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:

Raster_Object_Type: Grid Cell
Row_Count: 377
Column_Count: 374
Vertical_Count: 1

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Grid_Coordinate_System:

Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:

UTM_Zone_Number: 19
Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.999600
Longitude_of_Central_Meridian: -69.000000
Latitude_of_Projection_Origin: 0.000000
False_Easting: 500000.000000
False_Northing: 0.000000

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: row and column
Coordinate_Representation:

Abscissa_Resolution: 50.000000
Ordinate_Resolution: 50.000000

Planar_Distance_Units: meters

Geodetic_Model:

Horizontal_Datum_Name: D_WGS_1984
Ellipsoid_Name: WGS_1984
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257224

Vertical_Coordinate_System_Definition:

Depth_System_Definition:

Depth_Datum_Name: Mean lower low water
Depth_Resolution: 9999
Depth_Distance_Units: Information unavailable from original metadata.
Depth_Encoding_Method: Implicit coordinate

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
Contact_Voice_Telephone: 508-457-2348

Resource_Description: Downloadable Data
Distribution_Liability:

Although this data set has been used by the U.S. Geological Survey (USGS), no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and/or related materials. 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: AIG
Format_Version_Number: ArcGIS 9.0
Format_Specification: ESRI Raster GRID format
File_Decompression_Technique: no compression applied
Transfer_Size: 0.870

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: https://pubs.usgs.gov/of/2005/1293/zip/bedrock_depth.zip

Offline_Option:

Offline_Media: DVD-ROM
Recording_Format: UDF
Compatibility_Information: None

Fees: None

Technical_Prerequisites:

These data are available in Environmental Systems Research Institute (ESRI) GRID format. The user must have software capable of importing and processing the data file.

Metadata_Reference_Information:

Metadata_Date: 20240318
Metadata_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: 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 USGS. (updated on 20240318)

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Access_Constraints: None
Metadata_Use_Constraints: None

This page is <https://cmgds.marine.usgs.gov/catalog/whcmsc/open_file_report/ofr2005-1293/bedrock_metadata.html>