Cascadia tsunami deposit database

Metadata Updated: November 12, 2020

The Cascadia Tsunami Deposit Database contains data on the location and sedimentological properties of tsunami deposits found along the Cascadia margin. Data have been compiled from 52 studies, documenting 59 sites from northern California to Vancouver Island, British Columbia that contain known or potential tsunami deposits. Bibliographical references are provided for all sites included in the database. Cascadia tsunami deposits are usually seen as anomalous sand layers in coastal marsh or lake sediments. The studies cited in the database use numerous criteria based on sedimentary characteristics to distinguish tsunami deposits from sand layers deposited by other processes, such as river flooding and storm surges. Several studies cited in the database contain evidence for more than one tsunami at a site. Data categories include age, thickness, layering, grainsize, and other sedimentological characteristics of Cascadia tsunami deposits. The database documents the variability observed in tsunami deposits found along the Cascadia margin.

Access & Use Information

License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources

Dates

Metadata Date June 10, 2016
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Reference Date(s) January 1, 2003 (publication)
Frequency Of Update asNeeded

Metadata Source

Harvested from DOI Open Data

Graphic Preview

ArcExplorer screen capture showing distribution of cataloged tsunami deposits from this database along with geographic reference layers showing coastlines, topography, and political boundaries, 750x554 pixels, 202k bytes

Additional Metadata

Resource Type Dataset
Metadata Date June 10, 2016
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Reference Date(s) January 1, 2003 (publication)
Responsible Party United States Geological Survey (USGS), Coastal and Marine Geology (CMG) (Point of Contact)
Contact Email
Guid
Access Constraints Use Constraints: Please recognize the U.S. Geological Survey (USGS) as the source of this information. Physical materials are under controlled on-site access. Some USGS information accessed through this means may be preliminary in nature and presented without the approval of the Director of the USGS. This information is provided with the understanding that it is not guaranteed to be correct or complete and conclusions drawn from such information are the responsibility of the user. This information is not intended for navigational purposes. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government., Access Constraints: Physical materials are under controlled on-site access.
Bbox East Long -116.0
Bbox North Lat 52.0
Bbox South Lat 36.0
Bbox West Long -130.0
Coupled Resource
Frequency Of Update asNeeded
Graphic Preview Description ArcExplorer screen capture showing distribution of cataloged tsunami deposits from this database along with geographic reference layers showing coastlines, topography, and political boundaries, 750x554 pixels, 202k bytes
Graphic Preview File http://geo-nsdi.er.usgs.gov/metadata/open-file/03-13/browse.png
Graphic Preview Type PNG
Licence This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards or with the North American Stratigraphic Code. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Metadata Language
Metadata Type geospatial
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 1987-01-01
Temporal Extent End 2002-01-01

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