Adrian M. Bender (ORCID: 0000-0001-7469-1957)
Peter J. Haeussler (ORCID: 0000-0002-1503-6247)
20210510
Alaska Fault Trace Mapping, 2021
vector digital data
Anchorage, AK
U.S. Geological Survey, Alaska Science Center
Suggested Citation: Bender, A.M, Haeussler, P.J., 2021, Alaska fault trace mapping, 2021: U.S. Geological Survey data release, https://doi.org/10.5066/P9H02FXB
https://doi.org/10.5066/P9H02FXB
Rob Witter (ORCID: 0000-0002-1721-254X)
2007
Alaska Earthquake Hazards
Website
Science Portal
33
Anchorage, AK
U.S. Geological Survey, Alaska Science Center
This is a link to the broader USGS Alaska Science Center research project supported by these data. Users will find a description of the research project and links to associated reports, publications, and data products.
https://alaska.usgs.gov/portal/project.php?project_id=33
This dataset provides a detailed (1:10,000) digital map of fault and fold traces in Alaska, USA based on features identified in the freely available ArcticDEM 3.0. The fault traces represented in this dataset either revise the location and accuracy of known active faults or folds archived in the USGS Quaternary Fault and Fold Database, or represent the surface traces of active structures not previously recognized.
The purpose of this dataset is to update the USGS Quaternary Fault and Fold Database with mapping based on the highest-resolution digital topography available.
2018
ground condition
None planned
-166.059196
-137.776053
66.434890
60.325509
USGS Thesaurus
structural geology
paleoseismology
ISO 19115 Topic Category
geoscientificInformation
NASA GCMD Earth Science Keywords
Earth Science
Tectonic Landforms
Faults
Tectonic Processes
Geomorphic Landforms/Processes
USGS Metadata Identifier
USGS:ASC370
USGS Geographic Names Information System
Alaska
Alaska Range
Brooks Range
Yukon River
Yukon
None.
It is requested that the authors and the USGS Alaska Science Center be cited for any subsequent publications referenced to this dataset.
U.S. Geological Survey, Alaska Science Center
Mailing and Physical
4210 University Drive
Anchorage
Alaska
99508
907-786-7000
ascweb@usgs.gov
Adrian Bender mapped fault and fold traces in ArcMap 10.8 over slope and hillshade renderings of the ArcticDEM 3.0 provided by ESRI and accessed through ArcGIS Online, Peter Haeussler supervised the mapping. Evan Thoms, Camille Collett, and Dennis Walworth reviewed the data release. ArcticDEM digital elevation models created by the Polar Geospatial Center under NSF-OPP awards 1043681, 1559691, and 1542736 enabled this mapping.
Environment as of Metadata Creation: Microsoft Windows 10 Enterprise Version 1909; ESRI ArcGIS 10.8.1
U.S. Geological Survey
2018
Quaternary Fault and Fold Database of the United States
Vector digital data
Online
U.S. Geological Survey
U.S. Geological Survey, 1993, Quaternary fault and fold database for the United States, updated 2018, accessed March 3, 2021 at: https://www.usgs.gov/natural-hazards/earthquake-hazards/faults
https://www.usgs.gov/natural-hazards/earthquake-hazards/faults
Attribute values were checked for consistency with mapped features and, where applicable, cross-referenced for accuracy and consistency with attributes in the U.S. Geological Survey Quaternary Fault and Fold Database.
No formal logical accuracy tests were conducted, but visual inspection and review indicates that attribute values are consistent with the indicated scales of mapping relative to the base topography. All features are digitized in the strike direction according to the right-hand rule convention of Aki and Richards (1980); direction of digitization is consistent with SlipSense and Feature.
This dataset contains linework that completely describe the surface traces of faults considered in the area of interest. Continuity breaks in the linework represent locations where visually identifiable surface fault features are not identifiable in slope or hillshade renderings of the ArcticDEM 3.0.
The locational accuracy of the mapping reflects the 1:10,000 scale at which the originators mapped all features. The real-world accuracy of the ArcticDEM 3.0 as of this data release is not yet defined, but the ESRI-generated renderings used for this mapping (available via ArcGIS online) have horizontal and vertical accuracies estimated at 4 meters (https://www.arcgis.com/home/item.html?id=db38a951a2b643478a942ab22cd78fc6).
University of Minnesota Polar Geospatial Center
2018
ArcticDEM
3.0
Raster digital data
Online
University of Minnesota Polar Geospatial Center
University of Minnesota Polar Geospatial Center, 2018, ArcticDEM 3.0, accessed March 1, 2021 at https://www.pgc.umn.edu/data/arcticdem/
https://www.pgc.umn.edu/data/arcticdem/
Digital and/or Hardcopy Resources
2018
ground condition
ArcticDEM 3.0
Digital elevation model used to generate slope and hillshade renderings from which the originators interpreted and mapped fault and fold traces.
ESRI ArcMap (version 10.8.1) software was used to map the surface traces of faults and folds over the slope and hillshade renderings of the 2.0 meter/pixel ArcticDEM 3.0 where location accuracy and detail could be improved relative to the U.S. Geological Survey Quaternary Fault and Fold Database (QFFD), or where fault and/or fold traces were identified but no corresponding feature was previously archived in the QFFD.
ArcticDEM 3.0
20210301
Vector
String
647
0.000000001
0.000000001
Decimal degrees
Alaska_ArcticDEM_FaultTraces_2021
Shapefile, KML. and GeoJSON file of Alaska fault traces mapped on the ArcticDEM 3.0 and described by an attribute table containing the fields (attributes) described in this section.
This study/author defined.
FID
Internal feature number.
ESRI
Sequential unique whole numbers that are automatically generated.
Shape
Multiple polyline feature geometry.
ESRI
Coordinates defining the features.
FaultName
Name of fault taken from USGS Quaternary Fault and Fold database where this mapping revises known named faults, or based on nearby place names where mapped fault traces are not previously recognized.
QFFD
Name of fault or fold associated with the mapped fault trace.
Change
Indication of whether the mapped feature is a revision or addition to the U.S. Geological Survey Quaternary Fault and Fold Database prior to this data release.
Author defined
Added
Indicates that the mapped fault trace represents an addition to the U.S. Geological Survey Quaternary Fault and Fold Database prior to this data release.
Author defined
Revised
Indicates that the mapped fault trace represents a revision to the U.S. Geological Survey Quaternary Fault and Fold Database prior to this data release.
Author defined
SlipSense1
Primary description of the sense of slip or sense of motion on the mapped fault.
Author defined
Strike-slip
Strike-slip faults are vertical (or nearly vertical) fractures where the blocks have mostly moved horizontally. If the block opposite an observer looking across the fault moves to the right, the slip style is termed right-lateral; if the block moves to the left, the motion is termed left-lateral.
https://earthquake.usgs.gov/learn/glossary/?term=strike-slip
Normal
Dip-slip faults are inclined fractures where the blocks have mostly shifted vertically. If the rock mass above an inclined fault moves down, the fault is termed normal, whereas if the rock above the fault moves up, the fault is termed reverse. A thrust fault is a reverse fault with a dip of 45 degrees or less. Oblique-slip faults have significant components of different slip styles.
https://earthquake.usgs.gov/learn/glossary/?term=dip%20slip
Reverse
Dip-slip faults are inclined fractures where the blocks have mostly shifted vertically. If the rock mass above an inclined fault moves down, the fault is termed normal, whereas if the rock above the fault moves up, the fault is termed reverse. A thrust fault is a reverse fault with a dip of 45 degrees or less. Oblique-slip faults have significant components of different slip styles.
https://earthquake.usgs.gov/learn/glossary/?term=dip%20slip
SlipSense2
Modifier description of the sense of slip or sense of motion on the mapped fault.
Author defined
Text modifying SlipSense1 with scarp facing information and/or inferred slip sense information such as "oblique" or "transtension".
QfaultID
Identification number equivalent to the "FaultID" number assigned to faults archived in the U.S. Geological Survey Quaternary Fault and Fold Database. Entries of "0" indicate fault traces with no equivalent fault in the Quaternary Fault and Fold Database as of this data release.
Author defined
Identification number equivalent to the "FaultID" number assigned to faults archived in the U.S. Geological Survey Quaternary Fault and Fold Database. Entries of "0" indicate fault traces with no equivalent fault in the Quaternary Fault and Fold Database as of this data release.
Description
Description of the mapped feature.
Author defined
Text description of the mapped feature.
U.S. Geological Survey, Alaska Science Center
Mailing and Physical
4210 University Drive
Anchorage
Alaska
99508
907-786-7000
ascweb@usgs.gov
Authoritative source for the data.
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.
KML
Data are distributed in a Zip package containing data in KML, CSV, Shapefile and GeoJSON formats; FGDC metadata in XML and HTML formats.
No compression applied
780.00
https://doi.org/10.5066/P9H02FXB
CSV
Data are distributed in a Zip package containing data in KML, CSV, Shapefile and GeoJSON formats; FGDC metadata in XML and HTML formats.
No compression applied
780.00
https://doi.org/10.5066/P9H02FXB
Shapefile
Data are distributed in a Zip package containing data in KML, CSV, Shapefile and GeoJSON formats; FGDC metadata in XML and HTML formats.
No compression applied
780.00
https://doi.org/10.5066/P9H02FXB
GeoJSON
Data are distributed in a Zip package containing data in KML, CSV, Shapefile and GeoJSON formats; FGDC metadata in XML and HTML formats.
No compression applied
780.00
https://doi.org/10.5066/P9H02FXB
None.
KML, GeoJSON, and Shapefile formats are provided to import and display these map data in geographic information software of the user's choice. Options for downloading and displaying the ArcticDEM 3.0 are available at https://www.pgc.umn.edu/data/arcticdem/
20210507
U.S. Geological Survey, Alaska Science Center
Mailing and Physical
4210 University Drive
Anchorage
Alaska
99508
907-786-7000
ascweb@usgs.gov
FGDC Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998