Cascadia Tsunami Deposit Database

Open-File Report 2003-13
By: , and 



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.

Study Area

Additional publication details

Publication type Report
Publication Subtype USGS Numbered Series
Title Cascadia Tsunami Deposit Database
Series title Open-File Report
Series number 2003-13
DOI 10.3133/ofr0313
Year Published 2003
Language English
Publisher U.S. Geological Survey
Contributing office(s) Pacific Coastal and Marine Science Center
Description Report: 24 p.; Metadata; Database: XLS; Database: TXT; ArcView covers
Country Canada;United States
State British Columbia;California;Oregon;Washington
Other Geospatial Cascadia;Vancouver Island
Additional Online Files (Y/N) Y
Google Analytic Metrics Metrics page