Raw Ground Penetrating Radar Data on North American Glaciers

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Shad O'Neel (ORCID: 0000-0002-9185-0144)
Originator: Daniel McGrath (ORCID: 0000-0002-9462-6842)
Originator: Gabriel J. Wolken
Originator: Erin N. Whorton (ORCID: 0000-0002-1395-3084)
Originator: Salvatore G. Candela
Originator: Louis C. Sass (ORCID: 0000-0003-4677-029X)
Originator: Christopher J. McNeil (ORCID: 0000-0003-4170-0428)
Originator: Emily H. Baker (ORCID: 0000-0002-0938-3496)
Originator: Erich H. Peitzsch (ORCID: 0000-0001-7624-0455)
Originator: Daniel B. Fagre (ORCID: 0000-0001-8552-9461)
Originator: Adam M. Clark (ORCID:0000-0002-8863-1434)
Originator: Caitlyn E. Florentine (ORCID: 0000-0002-7028-0963)
Originator: Zachary S. Miller (ORCID:0000-0002-6876-6710)
Originator: John Erich Christian
Originator: Knut Christianson
Originator: Esther L. Babcock (ORCID: 0000-0001-7665-7795)
Originator: Michael G. Loso
Originator: Anthony A. Arendt
Originator: Evan W. Burgess
Originator: Alessio Gusmeroli
Publication_Date: 201809
Title: Raw Ground Penetrating Radar Data on North American Glaciers
Geospatial_Data_Presentation_Form: collection
Series_Information:
Series_Name: Raw Ground Penetrating Radar Data on North American Glaciers
Issue_Identification: Ver 2.1, September 2018
Publication_Information:
Publication_Place: Anchorage, Alaska
Publisher: U.S. Geological Survey, Alaska Science Center
Other_Citation_Details:
Suggested Citation: O'Neel, S., McGrath, D., Wolken, G. J., Whorton, E. N., Candela, S. G., Sass, L. C., McNeil, C. J., Baker, E. H., Peitzsch, E. H., Fagre, D. B., Clark, A. M., Florentine, C. E., Miller, Z. S., Christian, J. E., Christianson, K., Babcock, E. L., Loso, M. G., Arendt, A. A., Burgess, E. W., Gusmeroli, A., 2018, Raw Ground Penetrating Radar Data on North American Glaciers, (ver. 2.1, September 2018): U.S. Geological Survey data release, https://doi.org/10.5066/F7M043G7.
Online_Linkage: https://doi.org/10.5066/F7M043G7
Larger_Work_Citation:
Citation_Information:
Originator: Shad O'Neel (ORCID: 0000-0002-9185-0144)
Publication_Date: 2018
Title: Ground Penetrating Radar Data on North American Glaciers
Geospatial_Data_Presentation_Form: web site
Publication_Information:
Publication_Place: Anchorage, AK
Publisher: U.S. Geological Survey, Alaska Science Center
Online_Linkage: https://alaska.usgs.gov/portal/project.php?project_id=384
Description:
Abstract:
U.S. Geological Survey researchers conducted time-series ground-penetrating radar (GPR) surveys with a Sensors and Software 500-MHz Pulse Ekko Pro system. This data release contains ground-based (ski and snowmobile) as well as airborne common-offset profiles. All profiles are linked to coincident GPS observations. Additionally, common-midpoint data was collected at specific glacier locations. Coincident in-situ data may provide calibration information, and may be composed of any of the following: snow pits and/or snow-pit/snow-core combinations, probe profiles, and ablation stake data. This supplemental information provides estimates of snow properties which may be used to calibrate radar velocity.
Purpose:
We obtained data to estimate snow thickness on select North American glaciers to complement U.S. Geological Survey research efforts including local and regional scale mass-balance modeling. The purpose of this body of work is to monitor glacier change over time and to provide insights into glacier systems.
Supplemental_Information:
Collection parameters varied within data set. Additional information regarding parameters and settings included with these data (.HD files).
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 2012
Ending_Date: 2017
Currentness_Reference: observed
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Irregular
Spatial_Domain:
Description_of_Geographic_Extent: General location of North America glaciers within the study.
Bounding_Coordinates:
West_Bounding_Coordinate: -152.308
East_Bounding_Coordinate: -113.749
North_Bounding_Coordinate: 63.489
South_Bounding_Coordinate: 48.616
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Electromagnetic Data
Theme_Keyword: GPR
Theme_Keyword: geophysics
Theme_Keyword: Glaciology
Theme_Keyword: GPR
Theme_Keyword: ground-penetrating radar
Theme:
Theme_Keyword_Thesaurus: NASA Earth Science GCMD Thesaurus
Theme_Keyword: Cryosphere
Theme_Keyword: Glaciers/Ice Sheets
Theme_Keyword: Glaciers
Theme_Keyword: Ablation Zones/Accumulation Zones
Theme_Keyword: Spectral/Engineering
Theme_Keyword: Radar
Theme_Keyword: Radar Imagery
Theme:
Theme_Keyword_Thesaurus: USGS CSA Biocomplexity Thesaurus
Theme_Keyword: Glaciology
Theme_Keyword: Geomorphology
Theme_Keyword: Geology
Theme_Keyword: Remote Sensing
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: geoscientificInformation
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: Glaciology
Theme_Keyword: Snow and ice cover
Theme_Keyword: Glaciation
Theme_Keyword: Metamorphism (geological)
Theme_Keyword: Geophysics
Theme_Keyword: Radar imaging
Place:
Place_Keyword_Thesaurus: USGS Geographic Names Information System
Place_Keyword: Bear Glacier
Place_Keyword: Chenega Glacier
Place_Keyword: Columbia Glacier
Place_Keyword: Eagle Glacier
Place_Keyword: East Fork Glacier
Place_Keyword: Eklutna Glacier
Place_Keyword: Eureka Glacier
Place_Keyword: Exit Glacier
Place_Keyword: Gilkey Glacier
Place_Keyword: Gulkana Glacier
Place_Keyword: Harris Glacier
Place_Keyword: Lake George Glacier
Place_Keyword: Llewellyn Glacier
Place_Keyword: Lemon Creek Glacier
Place_Keyword: Maclaren Glacier
Place_Keyword: Matanuska Glacier
Place_Keyword: Nelchina Glacier
Place_Keyword: Norris Glacier
Place_Keyword: Powell Glacier
Place_Keyword: Scott Glacier
Place_Keyword: South Cascade Glacier
Place_Keyword: Sperry Glacier
Place_Keyword: Surprise Glacier
Place_Keyword: Susitna Glacier
Place_Keyword: Taku Glacier
Place_Keyword: Tazlina Glacier
Place_Keyword: Tulsequah Glacier
Place_Keyword: Valdez Glacier
Place_Keyword: West Fork Glacier
Place_Keyword: Wolverine Glacier
Place_Keyword: Yale Glacier
Access_Constraints: None
Use_Constraints:
Please cite U.S. Geological Survey/listed authors and give credit for the data. When appropriate, please consider co-authorship with the owners of the database. These data are the result of efforts by many of government and non-government participants in the field, including USGS and various researchers and managers. All publications based on these data should acknowledge all of these efforts. If a publication is based solely on the analysis of this data, we suggest that you involve the authors of this data with the writing and/or review of the manuscript. We would also appreciate receiving a reprint or copy of any publications or reports that make use of the data.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey, Alaska Science Center
Contact_Address:
Address_Type: mailing
Address: 4210 University Dr.
City: Anchorage
State_or_Province: AK
Postal_Code: 99508-4626
Country: USA
Contact_Voice_Telephone: (907) 786-7000
Contact_Facsimile_Telephone: (907) 786-7020
Contact_Electronic_Mail_Address: ascweb@usgs.gov
Data_Set_Credit:
University of Alaska Fairbanks, Alaska Division of Geological and Geophysical Surveys.
Cross_Reference:
Citation_Information:
Originator: Unknown
Publication_Date: Unknown
Title: U.S. Geological Survey Glaciers and Climate Project
Geospatial_Data_Presentation_Form: web site
Publication_Information:
Publication_Place: Online
Publisher: U.S. Geological Survey
Other_Citation_Details: USGS glaciers program web site
Online_Linkage:
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
We did not conduct any formal attribute accuracy tests. Quality of ground-penetrating radar data depends on signal-to-noise ratio, number of bad traces, and other data attributes. The user must assess these attributes on a case-by-case basis.
Logical_Consistency_Report:
We did not conduct any formal attribute accuracy tests. All of the profiles are linked to coincident GPS observations. Coincident in-situ data is provided for calibration, and may be composed of any of the following: snow pits and/or snow-pit/snow-core combinations, probe profiles, and ablation stakes. This supplemental information may provide snow property estimates for radar velocity calibration.
Completeness_Report:
Data set is considered complete for the information presented, as described in the abstract. We include all of the collected data even though some of the data may not be interpretable depending on intended use.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
We did not conduct any formal positional accuracy tests. Qualitatively, the positional accuracy is +/- 1 meter horizontally and +/- 3 meters vertically. Vertical GPS position for airborne data references the helicopter position not the ground surface.
Lineage:
Process_Step:
Process_Description:
We conducted ground-penetrating radar (GPR) surveys with a 500-MHz Pulse Ekko Pro sensors and software system. We collected common-offset data from the ground, towed behind a researcher using a snowmobile, and from the air, strapped underneath a helicopter. We also collected common-midpoint data at specific glacier locations. All the profiles are linked to coincident GPS observations. Coincident in-situ data may provide calibration information, and may be composed of any of the following: snow pits and/or snow-pit/snow-core combinations, probe profiles, and ablation stakes. This supplemental information may provide estimates of snow properties to calibrate radar velocity.
Process_Date: Unknown
Process_Step:
Process_Description:
Coincident in-situ data was collected for calibration and may be composed of any of the following: snow pits and/or snow-pit/snow-core combinations, probe profiles, and ablation stakes. This supplemental information provides estimates of snow properties to calibrate radar velocity.
Process_Date: Unknown
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey, Alaska Science Center
Contact_Address:
Address_Type: mailing and physical
Address: 4210 University Dr.
City: Anchorage
State_or_Province: AK
Postal_Code: 99508-4626
Country: USA
Contact_Voice_Telephone: (907) 786-7000
Contact_Electronic_Mail_Address: ascweb@usgs.gov
Resource_Description: Authoritative source for data.
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: ZIP
Format_Version_Number: 19
Format_Information_Content:
Data packages are organized by glacier and year. Each package contains GPR data as DT1, GPS, HD formats. In situ data is provided in CSV format. A summary map is included in PDF format. Metadata is provided in XML and HTML formats.
File_Decompression_Technique: Winzip legacy compression applied
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: https://doi.org/10.5066/F7M043G7
Fees: none
Ordering_Instructions:
Data for this collection are availabe from the GPR data download web page, using the DOI link provided in this document. Data are organized by glacier and year.
Technical_Prerequisites:
Proprietary files are hosted here for compactness, but can be viewed and processed using a number of freely available applications. These include Matlab GPR, available at http://users.uoa.gr/~atzanis/matgpr/matgpr.html and GPRSoft viewer, available at http://www.geoscanners.com/downloads.htm. Python, R, Octave, or other publicly available data software can be used to display the data visually.
Metadata_Reference_Information:
Metadata_Date: 20160728
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey, Alaska Science Center
Contact_Address:
Address_Type: mailing and physical
Address: 4210 University Dr.
City: Anchorage
State_or_Province: Alaska
Postal_Code: 99508-4626
Country: USA
Contact_Voice_Telephone: (907) 786-7000
Contact_Electronic_Mail_Address: ascweb@usgs.gov
Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998

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