Preliminary global database of known and inferred gas hydrate locations

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Metadata:

Identification_Information
Data_Quality_Information
Spatial_Data_Organization_Information
Spatial_Reference_Information
Entity_and_Attribute_Information
Distribution_Information
Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: William F. Waite
Originator: Carolyn D. Ruppel
Originator: Lee-Gray Boze
Originator: Thomas D. Lorenson
Originator: Brian J. Buczkowski
Originator: Katherine Y. McMullen
Originator: Keith A. Kvenvolden
Publication_Date: 20200611
Title:

Preliminary global database of known and inferred gas hydrate locations

Edition: 1.0
Geospatial_Data_Presentation_Form: XLXS spreadsheet
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P9LLFVJM

Publication_Information:

Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA
Publisher:

U.S. Geological Survey, Coastal and Marine Hazards and Resources Program

Other_Citation_Details:

Suggested citation: Waite, W.F., Ruppel, C.D., Boze, L-G., Lorenson, T.D., Buczkowski, B.J., McMullen, K.Y., and Kvenvolden, K.A., 2020, Preliminary global database of known and inferred gas hydrate locations: U.S. Geological Survey data release, https://doi.org/10.5066/P9llFVJM.

Online_Linkage: https://doi.org/10.5066/P9LLFVJM
Online_Linkage:

https://www.sciencebase.gov/catalog/item/5eb413a282ce25b5135a9f2a

Description:

Abstract:

For more than 25 years, the U.S. Geological Survey Gas Hydrates Project has compiled and maintained an internal database of locations where the existence of gas hydrate has been confirmed or inferred in research studies. The existence of gas hydrate was considered confirmed when gas hydrate was recovered by researchers or videotaped from a vehicle (such as a submersible or remotely operated vehicle) near the sea floor. The existence of gas hydrate was considered inferred when seismic data, borehole logs, or certain geochemical characteristics match anomalies known to characterize gas hydrate. This data release provides a text description of the region, geographic coordinates, and the citation for the published reference for known and inferred gas hydrate locations. Where the existence of gas hydrate was inferred, the description of the criteria used to make the inference was also included. Additional notes are provided to address any inconsistencies in the original locations (e.g., swapped latitude and longitude coordinates).

Purpose:

To provide information (both textual and geographic coordinates) about the locations of known (visually verified) gas hydrates and inferred gas hydrates in permafrost and marine settings based on compilation of data from the English-language scientific literature published since the 1970s.

Supplemental_Information:

Earlier versions of this database have been used for maps made by the USGS Gas Hydrates Project and its collaborators since the 1990s. The cross-referenced publications provide some of the earlier versions of the database in the form of maps.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 1990
Ending_Date: 2020

Currentness_Reference:

The data range represents the years over which this database was compiled and maintained by the USGS Gas Hydrates Project.

Status:

Progress: Planned
Maintenance_and_Update_Frequency: Irregular

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -178.4
East_Bounding_Coordinate: 178
North_Bounding_Coordinate: 80
South_Bounding_Coordinate: -75.9

Keywords:

Theme:

Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:5eb413a282ce25b5135a9f2a

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: geoscientificInformation
Theme_Keyword: oceans
Theme_Keyword: location
Theme_Keyword: environment

Theme:

Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: marine geology
Theme_Keyword: permafrost
Theme_Keyword: marine geophysics
Theme_Keyword: energy resources
Theme_Keyword: gas hydrate resources
Theme_Keyword: borehole logging

Theme:

Theme_Keyword_Thesaurus: None
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Coastal and Marine Hazards and Resources Program
Theme_Keyword: CMHRP
Theme_Keyword: Woods Hole Coastal and Marine Science Center
Theme_Keyword: WHCMSC
Theme_Keyword: USGS Gas Hydrates Project
Theme_Keyword: Energy Resources Program

Place:

Place_Keyword_Thesaurus: None
Place_Keyword: Alaska North Slope
Place_Keyword: Mackenzie Delta
Place_Keyword: Indian Ocean
Place_Keyword: Blake Ridge
Place_Keyword: South China Sea
Place_Keyword: Tibetan Plateau
Place_Keyword: Ulleung Basin
Place_Keyword: Nankai Trough
Place_Keyword: Hydrate Ridge
Place_Keyword: Sea of Japan
Place_Keyword: East Sea
Place_Keyword: Black Sea
Place_Keyword: Caspian Sea
Place_Keyword: Norwegian Sea
Place_Keyword: Sea of Marmara
Place_Keyword: Lake Baikal
Place_Keyword: Hikurangi Margin
Place_Keyword: Beaufort Sea
Place_Keyword: Norwegian Sea

Place:

Place_Keyword_Thesaurus: Common geographic areas
Place_Keyword: Arctic
Place_Keyword: India
Place_Keyword: North Slope
Place_Keyword: Canada
Place_Keyword: Svalbard
Place_Keyword: Atlantic
Place_Keyword: Pacific
Place_Keyword: Chile
Place_Keyword: Brazil
Place_Keyword: Mediterranean Sea
Place_Keyword: Russia
Place_Keyword: Japan
Place_Keyword: Korea, Republic of
Place_Keyword: Gulf of Mexico

Access_Constraints: None. Please see 'Distribution Info' for details.
Use_Constraints:

Not to be used for planning exact location of gas hydrate studies. Users are advised to consult the original studies cited here to verify locations and learn more details about the gas hydrate discoveries. Users are also advised to read the dataset's metadata thoroughly to understand appropriate use and data limitations.

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: William F. Waite
Contact_Organization:

U.S. Geological Survey, Woods Hole Coastal and Marine Science Center

Contact_Position: Research Geophysicist
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 x2346
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: wwaite@usgs.gov

Browse_Graphic:

Browse_Graphic_File_Name:

https://www.sciencebase.gov/catalog/file/get/5eb413a282ce25b5135a9f2a?name=USGSHydrateDatabaseMap2020.jpg

Browse_Graphic_File_Description: Map showing the known and inferred gas hydrate locations
Browse_Graphic_File_Type: JPEG

Data_Set_Credit:

The database has been compiled and maintained since approximately 1990 by scientists in the USGS Gas Hydrates Project. The database was initiated at the predecessor to the Pacific Coastal and Marine Science Center in the earliest 1990s. The database has been maintained by numerous personnel at the Woods Hole Coastal and Marine Science Center since ~2010.

Native_Data_Set_Environment:

Microsoft Windows 10 Enterprise edition; Microsoft Excel within Microsoft Office 365

Cross_Reference:

Citation_Information:

Originator: Ruppel, Carolyn D.
Originator: William F. Waite
Publication_Date: 2020
Title:

Grand Challenge: Timescales and Processes of Methane Hydrate Formation and Breakdown, with Application to Geologic Systems

Series_Information:

Series_Name: Journal of Geophysical Research
Issue_Identification: DOI:10.1029/2018JB016459

Publication_Information:

Publication_Place: Washington, D.C.
Publisher: American Geophysical Union

Other_Citation_Details:

Ruppel, C.D. and Waite, W.F., 2020, Grand Challenge: Timescales and Processes of Methane Hydrate Formation and Breakdown, with Application to Geologic Systems, J. Geophysical Research, 125, e2018JB016459.

Online_Linkage: https://doi.org/10.1029/2018JB016459

Cross_Reference:

Citation_Information:

Originator: Carolyn D. Ruppel
Publication_Date: 2018
Title: Gas hydrate in nature
Publication_Information:

Publication_Place: Reston, VA
Publisher: US Geological Survey

Online_Linkage: https://doi.org/10.3133/fs20173080

Cross_Reference:

Citation_Information:

Originator: Keith A. Kvenvolden
Publication_Date: 20100614
Title: Gas hydrates-geological perspective and global change
Series_Information:

Series_Name: Reviews of Geophysics
Issue_Identification: 31(2)

Publication_Information:

Publication_Place: Washington, D.C.
Publisher: American Geophysical Union (AGU)

Other_Citation_Details: pages 173-187
Online_Linkage: https://doi.org/10.1029/93RG00268

Cross_Reference:

Citation_Information:

Originator: Y.C. Beaudoin
Originator: W. Waite
Originator: R. Boswell
Originator: S.R. Dallimore
Publication_Date: 2014
Title:

Frozen Heat: A UNEP Global Outlook on Methane Gas Hydrates. Volume 1

Publication_Information:

Publication_Place: Norway
Publisher: United Nations Environment Programme

Online_Linkage:

https://wedocs.unep.org/bitstream/handle/20.500.11822/9355/GasHydrates_Vol1_screen.pdf

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

The only numeric values in this dataset are the latitude and longitude for known and inferred gas hydrates as reported in published works. For known gas hydrate locations and inferred gas hydrate occurrences not associated with bottom simulating reflections (BSRs), the values recorded here are only as accurate as those in the original published works. When the published work was describing a particular geographic area, but the coordinates did not plot in that area, the compilers of this dataset investigated the error in the reported locations. Usually, the error was related to the authors of the published work having accidentally switched latitude and longitude or given an unsigned latitude or longitude. If such corrections were made, they are described in the "notes" field. Inferred gas hydrate locations associated with BSRs are denoted with geographic coordinates chosen from within the region where the BSRs are described in the published works. These single points cannot represent the entire areal extent of the BSRs.

Logical_Consistency_Report:

The geographic coordinates are plausible. For this data set, geographic coordinates are reported only one time even if gas hydrate was recovered at many depths within the same well. If known and inferred gas hydrate coordinates were exactly the same, as is sometimes the case when gas hydrate is recovered at one depth in a well and inferred at another, the entry for the known gas hydrate was retained and assumed to supersede inferences of gas hydrate at other depths in the well. Geographic coordinates reported for different hydrate locations sometimes vary only in the 4th decimal place in the database. In these cases, the original geographic coordinates refer to closely-spaced wells drilled during expeditions investigating gas hydrates. The geographic coordinates reported in the database were plotted on a world map to ensure that the locations were logical for the known conditions that govern the existence of gas hydrate (e.g., not in the middle of a continent in an area lacking permafrost; not on a mid-ocean ridge) and to check that the locations corresponded to the regions described in the published works.

Completeness_Report:

Complete to the best knowledge of the compilers. For gas hydrate locations reported more than once in the literature, the first publication or the first few publications that completely characterize the gas hydrate recoveries or inferences are cited. Subsequent studies visiting the same location are not cited here. Note that a BSR was described on Alpha Ridge in the Central Arctic Ocean by Jackson, H.R., Forsyth, D.A., and Johnson, G.L., 1986, Oceanic Affinities of the Alpha Ridge, Arctic Ocean, Marine Geology, v. 73, p. 237-261. This inference is not included in this database because one of the compilers noted in 2018 that the feature described in that reference was unlikely to be a BSR and corresponded with H. Ruth Jackson, who confirmed that the feature was not a BSR.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

The locations are extracted directly from published reports and have the accuracy provided in the original reports. The locations were recorded using various datums that are not documented in most of the reports or in this database. No corrections for datums were made by the compilers of this dataset. In some cases, it was clear to the compilers of this database that the latitude and longitude in the original reports had been switched, and this error is described in the "notes" column and the corrected latitude and longitude reported.

Lineage:

Process_Step:

Process_Description:

Publications that describe direct observations of gas hydrate (e.g., at the sea floor) or the recovery of gas hydrate by coring, drilling, or other means were reviewed and the locations of the gas hydrate assembled in a database. These gas hydrates are considered "known" because their existence has been visually confirmed. Publications that describe indirect evidence for gas hydrates were similarly reviewed and information about these locations assembled in the database. Indirect evidence for gas hydrates may include well logs (especially resistivity logs), thermal infrared anomalies in recovered cores, identification of bottom simulating reflections (BSRs), freshening of pore waters owing to hydrate dissociation, sediment texture (moussey sediments resulting from hydrate dissociation), advanced seismic analyses, or other indicators. In cases for which actual geographic coordinates were not provided by the authors of publications, locations were extracted from maps within the publications. Some gas hydrate locations may be missing from the database if neither the geographic information or a labelled map were not provided in the publications although best efforts were made to estimate the locations when possible. Since approximately 2015, the focus for the database compilation has been on finding newly published locations for gas hydrate with online notification services used to track new publications in the discipline. In ~2013, existing entries were carefully checked to verify the citation, hydrate location, and other information describing the gas hydrate occurrences. This compilation is ongoing and represents work completed from ~1990 to the present (2020). Note that a location may have both known hydrates and inferred hydrates. The locations with "inferred" hydrates do not become "known" once hydrate has been recovered there.

Process_Date: 2020
Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey
Contact_Person: William F. Waite

Contact_Position: Research Geophysicist
Contact_Address:

Address_Type: mailing and physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: Massachusetts
Postal_Code: 02543-1598
Country: USA

Contact_Voice_Telephone: 508-548-8700 x2346
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: wwaite@usgs.gov

Process_Step:

Process_Description:

Location errors, inconsistent geographic descriptors, and faulty citations were addressed. Hydrate inferences were assigned consistent descriptors. Where available, the digital object identifiers were added to the references, which are provided in the citation format given by the original publication. The Excel Office 365 XLSX file was written in native format.

Process_Date: 20200515
Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey
Contact_Person: Carolyn Ruppel

Contact_Position: Research Geophysicist
Contact_Address:

Address_Type: mailing and physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: Massachusetts
Postal_Code: 02543-1598
Country: USA

Contact_Voice_Telephone: 508-548-8700 x2263
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: cruppel@usgs.gov

Process_Step:

Process_Description:

Added keywords section with USGS persistent identifier as theme keyword.

Process_Date: 20200807
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: Point
Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Point
Point_and_Vector_Object_Count: 438

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 1
Longitude_Resolution: 1
Geographic_Coordinate_Units: Decimal degrees

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: USGSglobalhydratedatabase2020.xlsx
Entity_Type_Definition: Excel Office 365 worksheet
Entity_Type_Definition_Source: Producer Defined

Attribute:

Attribute_Label: Location
Attribute_Definition:

Text field providing up to three location designations separated by dashes, starting with the most general and progressing to the most specific. For marine locations, the first designator refers to the appropriate ocean or basin. For onshore locations (permafrost or Lake Baikal), the first designator refers to the country. For locations in the northern Gulf of Mexico, the number following the third designator for some entries is the Outer Continental Shelf lease block as designated by the U.S. Bureau of Ocean Energy Management. Geographic designators are sometimes more specific for inferred locations than known locations since the inferred locations often refer to bottom simulating reflectors that are recognized in a specific small region. Some locations have a designator that includes a slash ("/"). This is the case for the Sea of Japan/East Sea or East Sea/Sea of Japan since this same body of water is referred to using both names, usually dependent on the nationality of the lead author of the associated reference. The Tibetan/Qinghai Plateau is also referred to with both names to assist users in understanding the location.

Attribute_Definition_Source: Producer Defined
Attribute_Domain_Values:

Unrepresentable_Domain: ASCII text

Attribute:

Attribute_Label: Latitude
Attribute_Definition:

Decimal degree with positive denoting north latitude and negative denoting south latitude. Locations reported in the original publications varied in precision from a degree to thousandths of a degree. Many of the original publications reported locations in degree-minute-second or degree-decimal minutes format. All locations were converted to decimal degrees.

Attribute_Definition_Source: Producer Defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -75.9
Range_Domain_Maximum: 80.0
Attribute_Units_of_Measure: degree

Attribute:

Attribute_Label: Longitude
Attribute_Definition:

Decimal degree with positive values denoting east longitude relative to the prime meridian and negative denoting west longitude. Locations reported in the original publications varied in precision from a degree to thousandths of a degree. Many of the original publications reported locations in degree-minute-second or degree-decimal minutes format. All locations were converted to decimal degrees.

Attribute_Definition_Source: Producer Defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -178.0
Range_Domain_Maximum: 178.4
Attribute_Units_of_Measure: degree

Attribute:

Attribute_Label: Status
Attribute_Definition:

Text designator distinguishing between known and inferred occurrences of gas hydrates

Attribute_Definition_Source: Producer Defined
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: known
Enumerated_Domain_Value_Definition: locations where gas hydrate has been confirmed
Enumerated_Domain_Value_Definition_Source: Producer Defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: inferred
Enumerated_Domain_Value_Definition:

location where gas hydrate indicators are recognized, but no visual confirmation has been made

Enumerated_Domain_Value_Definition_Source: Producer Defined

Attribute:

Attribute_Label: Reference
Attribute_Definition:

Text field that contains the citation to the scientific work or works that describe the gas hydrate finding, including the digital object identifier (DOI) or URL when available.

Attribute_Definition_Source: Producer Defined
Attribute_Domain_Values:

Unrepresentable_Domain: ASCII text

Attribute:

Attribute_Label: Notes
Attribute_Definition:

This is a text field used to address any inconsistencies in the original locations (e.g., swapped latitude and longitude coordinates), source of coordinates if not provided in the publication (e.g., interpolated from map)......The field is blank if no additional information is necessary.

Attribute_Definition_Source: Producer Defined
Attribute_Domain_Values:

Unrepresentable_Domain: ASCII text

Attribute:

Attribute_Label: Evidence
Attribute_Definition:

For known hydrates, the text field indicates "Directly observed." For inferred gas hydrates, the text field contains a description of the type of indicator. A single record can have more than one of these values separated by a comma.

Attribute_Definition_Source: Producer Defined
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: BSR
Enumerated_Domain_Value_Definition:

bottom simulating reflections defined based on single or multichannel seismic data

Enumerated_Domain_Value_Definition_Source: Producer Defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: carbonate indicators
Enumerated_Domain_Value_Definition:

presence of authigenic carbonate and carbonate formations inferred by reference authors to indicate hydrate

Enumerated_Domain_Value_Definition_Source: Producer Defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: chlorinity
Enumerated_Domain_Value_Definition:

refers to chloride anomalies associated with freshening of pore waters, which occurs when gas hydrate dissociates in sediments and dilutes the pore waters

Enumerated_Domain_Value_Definition_Source: Producer Defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: compliance
Enumerated_Domain_Value_Definition:

indicates that the analysis of seismic compliance contributed to the inference of subseafloor gas hydrates

Enumerated_Domain_Value_Definition_Source: Producer Defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: deepwater seepage
Enumerated_Domain_Value_Definition:

describes a seafloor methane seep within the pressure and temperature conditions for gas hydrate stability, meaning that gas hydrate is inferred to be present beneath the sea floor near the seep

Enumerated_Domain_Value_Definition_Source: Producer Defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Directly observed
Enumerated_Domain_Value_Definition:

for known gas hydrates, the hydrate has been observed at the seafloor or recovered in cores

Enumerated_Domain_Value_Definition_Source: Producer Defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: electromagnetic
Enumerated_Domain_Value_Definition:

refer to controlled source electromagnetic (EM) surveys or similar areal surveys using other EM technologies

Enumerated_Domain_Value_Definition_Source: Producer Defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: gas concentrations
Enumerated_Domain_Value_Definition:

refer to characteristics of recovered sediments, which may include large amounts of gas upon recovery or may generate large volumes of gas as gas hydrate dissociation evolves

Enumerated_Domain_Value_Definition_Source: Producer Defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: gas escape features
Enumerated_Domain_Value_Definition:

indicate indirect seafloor evidence (pockmarks) for gas escape in areas where gas hydrate should be stable

Enumerated_Domain_Value_Definition_Source: Producer Defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: gravity
Enumerated_Domain_Value_Definition:

refers to the use of gravity anomalies to constrain gas hydrate locations

Enumerated_Domain_Value_Definition_Source: Producer Defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: IR anomalies
Enumerated_Domain_Value_Definition:

indicates thermal infrared imaging of recovered cores to highlight cold spots associated with the presence or dissociation of gas hydrate in sediments

Enumerated_Domain_Value_Definition_Source: Producer Defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: resistivity
Enumerated_Domain_Value_Definition:

Elevated resistivity values are the most commonly used well log indicator to infer gas hydrates in this database, and "resistivity" is used when this was the key measurement that contributed to the inference of gas hydrate

Enumerated_Domain_Value_Definition_Source: Producer Defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: seafloor morphology
Enumerated_Domain_Value_Definition:

indicates the low hummocks sometimes associated with hydrate-cored seafloor mounds

Enumerated_Domain_Value_Definition_Source: Producer Defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: sediment texture
Enumerated_Domain_Value_Definition:

denotes observations of the characteristic moussey texture of recovered sediment cores following gas hydrate dissociation

Enumerated_Domain_Value_Definition_Source: Producer Defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: sediment structures
Enumerated_Domain_Value_Definition:

denotes sedimentary structures interpreted in the reference as being typical of gas hydrate provinces

Enumerated_Domain_Value_Definition_Source: Producer Defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: seismic
Enumerated_Domain_Value_Definition:

seismic analyses other than bottom simulating reflections (BSRs); analyses may include seismic attributes, amplitude versus offset, analysis of frequency characteristics indicating gassy sediments, velocity analyses, or P-wave measurements on recovered cores

Enumerated_Domain_Value_Definition_Source: Producer Defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: other
Enumerated_Domain_Value_Definition: not fitting into any of the other defined categories
Enumerated_Domain_Value_Definition_Source: Producer Defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: well logs
Enumerated_Domain_Value_Definition:

inference based on the analysis of conventional wireline logging records or those obtained via logging while drilling

Enumerated_Domain_Value_Definition_Source: Producer Defined

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey - ScienceBase

Contact_Address:

Address_Type: mailing and physical address
Address: Denver Federal Center, Building 810, Mail Stop 302
City: Denver
State_or_Province: CO
Postal_Code: 80225

Contact_Voice_Telephone: 1-888-275-8747
Contact_Electronic_Mail_Address: sciencebase@usgs.gov

Resource_Description:

The dataset contains the data in Excel XLSX format only (USGSglobalhydratedatabase2020.xlsx), a browse graphic of data locations (USGSHydrateDatabaseMap2020.jpg), and the associated FGDC CSDGM metadata.

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 on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: XLXS
Format_Version_Number: Microsoft Excel Office 365
Format_Information_Content:

The dataset contains the XLSX format of the data, a browse graphic, and associated FGDC CSDGM metadata.

Transfer_Size: 1

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

https://www.sciencebase.gov/catalog/file/get/5eb413a282ce25b5135a9f2a

Network_Resource_Name:

https://www.sciencebase.gov/catalog/item/5eb413a282ce25b5135a9f2a

Access_Instructions:

The first link downloads all the files from the dataset landing page, the second link goes to the dataset landing page where files can be downloaded individually.

Fees: None

Technical_Prerequisites:

To utilize these data, the user must have software capable of reading Excel files and displaying a JPEG file.

Metadata_Reference_Information:

Metadata_Date: 20200807
Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Carolyn D. Ruppel
Contact_Organization: U.S. Geological Survey, Northeast Region

Contact_Position: Research Geophysicist
Contact_Address:

Address_Type: mailing address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Country: United States

Contact_Voice_Telephone: 508-548-8700 x2339
Contact_Electronic_Mail_Address: cruppel@usgs.gov

Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998

This page is <https://cmgds.marine.usgs.gov/catalog/whcmsc/SB_data_release/DR_P9llFVJM/USGShydrate_knowninferredlocationsfinal.html>