Gas mapped within Holocene unit, u1: Hudson Shelf Valley

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Jane F. Denny

Publication_Date: 2002

Publication_Time: Unknown

Title: Gas mapped within Holocene unit, u1: Hudson Shelf Valley

Edition: 1

Geospatial_Data_Presentation_Form: vector digital data

Publication_Information:

Publication_Place: Woods Hole, MA

Publisher: US Geological Survey

Larger_Work_Citation:

Citation_Information:

Originator: Schwab, William C.

Originator: Denny, Jane F.

Originator: Foster, David S.

Originator: Lotto, Linda L.

Originator: Allison, Mead A.

Originator: Uchupi, Elazar

Originator: Swift, B. Ann

Originator: Danforth, William W.

Originator: Thieler, Robert E.

Originator: Butman, Bradford

Publication_Date: 2002

Title:

High-Resolution Quaternary seismic stratigraphy of the New York Bight Continental Shelf

Geospatial_Data_Presentation_Form:

Maps, remote sensing imagery, tabular digital data, and raster and vector digital data

Series_Information:

Series_Name: Open-File Report

Issue_Identification: OFR02-152

Publication_Information:

Publication_Place: Woods Hole, MA

Publisher: U.S. Geological Survey

Description:

Abstract:

These data represent gas found within the upper most mappable unit wtihin the Hudson Shelf Valley; Holocene unit, u1. These data were mapped based CHIRP seismic-reflection records collected May, 1996. See Allison, 1997; Lanier, 1999; Lotto, 2000.

Purpose:

In 1995, the U.S. Geological Survey (USGS), in cooperation with the U.S. Army Corps of Engineers (USACE), began a program to generate reconnaissance maps of the sea floor offshore of the New York - New Jersey metropolitan area and within the southern Long Island nearshoe area. Our methods include high-resolution sidescan sonar and subbottom profiling techniques, along with surface grab and vibracore sampling to verify the geophysical interpretations. The goal of the investigation is to provide a regional synthesis of the sea-floor environment, to determine regional-scale availability of sand as a resource for beach nourishment programs, and to investigate the role that inner-shelf morphology and geologic framework have in the evolution of the coastal region within the New York Bight Apex and southern Long Island. Maps derived from interpretation of the subbottom profiles show information on the geometry and distribution of the Quaternary sediments and the underlying coastal-plain unconformity. This seismic stratigraphy yields a regional framework on which explanations of present (and past) sediment movement, dispersal, and erosion processes are based.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 19960501

Ending_Date: 19960530

Currentness_Reference: publication date

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -74.06

East_Bounding_Coordinate: -71.8000

North_Bounding_Coordinate: 41.26

South_Bounding_Coordinate: 40

Keywords:

Theme:

Theme_Keyword_Thesaurus: Hudson Shelf Valley

Theme_Keyword: Pleistocene channels

Theme_Keyword: Gas

Theme_Keyword: Clinoform

Place:

Place_Keyword_Thesaurus: New York Bight

Place_Keyword: inner-shelf

Place_Keyword: New York

Place_Keyword: Hudson Shelf Valley

Access_Constraints: none

Use_Constraints: none

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Jane F. Denny

Contact_Organization: US Geological Survey

Contact_Position: Geologist

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Road

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543

Country: USA

Contact_Voice_Telephone: 508-457-2311

Contact_Facsimile_Telephone: 508-457-2310

Contact_Electronic_Mail_Address: jdenny@usgs.gov

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

These data are derived from 2D seismic reflection profiles that are spaced approximately 1.3 km apart in the cross track-direction. Shore perpendicular track lines were spaced about 3-4 km apart. Along track samples of the seismic profiles are approximately 1 meter assuming a ship speed of 2 meters/second. The data were downsampled in the along-track direction at an interval of about 30 meters.

Logical_Consistency_Report:

The Pleistocene channels and gas and structure found within these channels, were mapped by Allison(1997) and Lanier(1999).

Completeness_Report: complete

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

DGPS is assumed to be accurate within 1-2 meters. Standard GPS is assumed accurate within 5-10 meters. 99% of the positional data is DGPS. Unless noted, all GPS/DGPS data is referenced to WGS84 (NAD83). The horizontal positioning did not account for source and receiver offsets and offset the GPS antennae and the boomer source and streamer. It is estimated that these offsets could lead to inaccuracies of about 30 m.

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

Vertical positioning accuracy of the offshore data is based on the seafloor reference used.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: Allison, M.A.

Originator: Lotto, L.L

Originator: Buchholtz ten Brink

Originator: Schwab, W.C.

Publication_Date: 1997

Publication_Time: unknown

Title:

Formation and geologic evolution of the Hudson Shelf Valley, New York Bight(abstract):

Edition: 1

Geospatial_Data_Presentation_Form: map

Series_Information:

Series_Name: Geological Society of America, Abstracts with Programs

Issue_Identification: vol.29, p.27

Publication_Information:

Publication_Place: Unknown

Publisher: Geological Society of America

Type_of_Source_Media: map

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 19970000

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: Hudson Shelf Valley

Source_Contribution:

This reference definees the Pleistocene channels mapped within the Hudson Shelf Valley.

Source_Information:

Source_Citation:

Citation_Information:

Originator: Lanier, D.L

Originator: Allison, M.A.

Originator: Schwab, W.C.

Originator: Thieler, E.R.

Originator: Butman, B.

Publication_Date: 1999

Publication_Time: unknown

Title:

Effects of Holocene transgression on the stratigraphy of the NY Bight inner continental shelf

Edition: 1

Geospatial_Data_Presentation_Form: digital raster data

Series_Information:

Series_Name: American Geophysical Union, Ocean Sciences Meeting Supplement

Issue_Identification: OS203

Publication_Information:

Publication_Place: unknown

Publisher: unknown

Type_of_Source_Media: map

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1999

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: Lanier

Source_Contribution:

This reference was used in the interpretation of the Pleistocene channels within the Hudson Shelf Valley.

Source_Information:

Source_Citation:

Citation_Information:

Originator: Lotto, L.L

Publication_Date: 2000

Publication_Time: Unknown

Title:

Seismic stratigrpahy and Quaternary evolution of the New York Bight inner continental shelf: Texas A&M University, unpublished M.S. Thesis, College Station, TX, 79p and 16 sheets.

Edition: 1

Geospatial_Data_Presentation_Form: map

Series_Information:

Series_Name: Masters of Science Thesis

Issue_Identification: unknown

Publication_Information:

Publication_Place: College Station, Texas

Publisher: Texas A&M University

Type_of_Source_Media: online

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2000

Source_Currentness_Reference: Publication Date

Source_Citation_Abbreviation: Seismic Stratigraphy of New York Bight

Source_Contribution:

The well log data compiled within this thesis were used to generate a gridded data set of the depth to coastal-plain Unconformity and Quaternary thickness onshore Long Island, NY.

Source_Information:

Source_Citation:

Citation_Information:

Originator: Lanier, D.L

Originator: Allison, M.A.

Publication_Date: 2002

Publication_Time: unknown

Title: rednew

Edition: 1

Geospatial_Data_Presentation_Form: digital vector data

Series_Information:

Series_Name: MapInfo vector file

Issue_Identification: MapInfo vector file

Other_Citation_Details: See Allison, 1999; Lanier, 1997.

Type_of_Source_Media: digital raster grid

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2000

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: MapInfo Pleistocene Channel, r6

Source_Contribution:

This MapInfo vector file contain contours of a Pleistocene channel mapped within the Hudson Shelf Valley based on 15 cubic inch water gun and CHIRP seismic-reflection data, gas and structure wtihin the channels, and gas within an upper seismic facies. The MapInfo file was converted to ArcView vector format. The areas containing gas and structure were extracted and converted to individual ArcView shapefiles for display within ArcView 3.2.

Source_Information:

Source_Citation:

Citation_Information:

Originator: Lanier, D.L.

Originator: Allison, M.A.

Publication_Date: 2002

Publication_Time: unknown

Title: bluenew

Edition: 1

Geospatial_Data_Presentation_Form: digital vector data

Series_Information:

Series_Name: MapInfo vector data

Issue_Identification: MapInfo vector data

Other_Citation_Details: See Allison, 1997; Lanier, 1999.

Type_of_Source_Media: digital raster grid

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2000

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: Pleistocene channel, r5

Source_Contribution:

This MapInfo vector file contain contours of a Pleistocene channel mapped within the Hudson Shelf Valley based on 15 cubic inch water gun and CHIRP seismic-reflection data, gas and structure wtihin the channels, and gas within an upper seismic facies. The MapInfo file was converted to ArcView vector format. The areas containing gas and structure were extracted and converted to individual ArcView shapefiles for display within ArcView 3.2.

Process_Step:

Process_Description:

MapInfo vector data, rednew and bluenew, were converted into ArcView 3.2 shapefiles using the Universal Translator within MapInfo 5.5. Polygons within the original files defining the location of gas within the upper most mappable unit within the Hudson Shelf Valley; Holocene unit, u1. These data were converted to shapefile:

gas_u1.shp

Process_Date: 2000

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Jane F. Denny

Contact_Organization: US Geological Survey

Contact_Position: Geologist

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Road

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543

Country: USA

Contact_Voice_Telephone: 508-457-2311

Contact_Facsimile_Telephone: 508-457-2310

Contact_Electronic_Mail_Address: jdenny@usgs.gov

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: G-polygon

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.000089992

Longitude_Resolution: 0.000089992

Geographic_Coordinate_Units: decimal degrees

Geodetic_Model:

Horizontal_Datum_Name: WGS84

Ellipsoid_Name: WGS84

Semi-major_Axis: 6378137.0000000

Denominator_of_Flattening_Ratio: 298.26

Vertical_Coordinate_System_Definition:

Altitude_System_Definition:

Altitude_Datum_Name: North American Vertical Datum of 1988

Altitude_Resolution: 1

Altitude_Distance_Units: Meters

Altitude_Encoding_Method:

Explicit elevation coordinate included with horizontal coordinates

Depth_System_Definition:

Depth_Datum_Name: Mean sea level

Depth_Resolution: 0.1

Depth_Distance_Units: Meters

Depth_Encoding_Method: Explicit depth coordinate included with horizontal coordinates

Distribution_Information:

Distributor:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Jane F. Denny

Contact_Organization: US Geological Survey

Contact_Position: Geologist

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Road

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543

Country: USA

Contact_Voice_Telephone: 508-457-2311

Contact_Facsimile_Telephone: 508-457-2310

Contact_Electronic_Mail_Address: jdenny@usgs.gov

Resource_Description: gas and clinoform definition, HSV

Distribution_Liability:

Altough this data set and its lineage have been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and/or it's 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 items. Users must assume responsibility for the proper use of this data. This data should not be used at resolutions for which it is not intended. This data has no been reviewed for conformity with US Geological Survey editorial standards, or the North American Strigraphic code. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the US Government.

Metadata_Reference_Information:

Metadata_Date: 20020119

Metadata_Review_Date: 2002

Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Jane F. Denny

Contact_Organization: US Geological Survey

Contact_Position: Geologist

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Road

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543

Country: USA

Contact_Voice_Telephone: 508-457-2311

Contact_Facsimile_Telephone: 508-457-2310

Contact_Electronic_Mail_Address: jdenny@usgs.gov

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Access_Constraints: None

Metadata_Use_Constraints: None