Tags
Estimated tsunami wave arrival times, in minutes.
Oregon Department of Geology and Mineral Industries
This raster layer shows estimated wave arrival times, in minutes, for a maximum-considered XXL1 tsunami caused by a magnitude 9.1 Cascadia Subduction Zone (CSZ) earthquake.
We evaluated pedestrian evacuation in Gold Beach and nearby unincorporated communities of Curry County, Oregon in the event of a local tsunami generated by an earthquake on the Cascadia subduction zone (CSZ). This raster layer shows estimated wave arrival times, in minutes, for a maximum-considered XXL1 tsunami caused by a magnitude 9.1 Cascadia Subduction Zone (CSZ) earthquake. This layer was created based on the Extra-extra-large1 (XXL1) tsunami scenario, which is a Local Cascadia Subduction Zone (CSZ) tsunami scenario generated by a magnitude 9.1 earthquake. The XXL1 event has an estimated recurrence rate of at least 10,000 years. See the text from this Open-file Report O-21-03 for technical information on mapping methods and a discussion of results and interpretation.
The purpose of this data is to provide local government with a quantitative assessment of pedestrian evacuation in order to evaluate mitigation options such as evacuation route improvements, better wayfinding, land use planning actions, and potential vertical evacuation options.
None
REPORT DATA: This product is for informational purposes and may not have been prepared for or be suitable for legal, engineering, or surveying purposes. Users of this information should review or consult the primary data and information sources to ascertain the usability of the information. This publication cannot substitute for site-specific investigations by qualified practitioners. Site-specific data may give results that differ from the results shown in the publication. See the accompanying text report for more details on the limitations of the methods and data used to prepare this publication.
When contacting DOGAMI about this data set, please reference the data set title or other identifying information in your correspondence. DOGAMI publications can be downloaded from http://www.oregongeology.org
This project was funded by the National Oceanic and Atmospheric Administration (NOAA) through the National Tsunami Hazard Mitigation Program under award No. NA19NWS4670013.
Raster statistics were extracted for each rasters and compared with other equivalent rasters for consistency and to check for any possible erroneous values. All minimum and maximum raster values were plotted and compared to all similar rasters and all values fell within the expected ranges.
Raster values were checked (cellsize and raster statistics including min, max and mean) using automated QAQC tools designed specifically for tsunami data. This layer was also reviewed visually in ArcGIS.
This dataset is complete for Gold Beach and nearby unincorporated communities of Curry County, Oregon. This is defined as the area from Ophir in the north down to and including Hunter Creek in the south. To the east it extends up the Rogue River as far as the Canfield Riffle.
Tsunami simulations use unstructured computational grids constructed from detailed bathymetric and topographic data, particularly lidar. Spacing between computational grid points, a measure of the precision of this data, is generally less than 10 m in populated areas and at critical shoreline features such as jetties.
This is Not Applicable.
The source points were converted to a TIN and then into a raster. Most of the methodology for this process was described in Priest et al, 2013a and Priest et al 2013b. Tsunami evacuation modeling processes are described in Priest and others, 2016 and Gabel and others, 2018b. See the text from this open-file report for technical information on mapping methods. This layer was generated using Esri ArcGIS 10.7 and Esri ArcPro 2.7 software.
When contacting DOGAMI about this data set, please reference the data set title or other identifying information in your correspondence. DOGAMI publications can be downloaded from http://www.oregongeology.org
This raster layer shows estimated wave arrival times, in minutes, for a maximum-considered XXL1 tsunami caused by a magnitude 9.1 Cascadia Subduction Zone (CSZ) earthquake.
When contacting DOGAMI about this data set, please reference the data set title or other identifying information in your correspondence. DOGAMI publications can be downloaded from http://www.oregongeology.org
Although these data have been processed successfully on a computer system at the Oregon Department of Geology and Mineral Industries, no warranty expressed or implied is made by DOGAMI regarding the utility of the data on any other system, nor shall the act of distribution constitute any such warranty.
When contacting DOGAMI about this data set, please reference the data set title or other identifying information in your correspondence. DOGAMI publications can be downloaded from http://www.oregongeology.org