Tsunami inundation maps of Whittier
Nicolsky, D.J., Suleimani, E.N., Combellick, R.A., and Hansen, R.A., 2011, Tsunami inundation maps of Whittier and western Passage Canal, Alaska: Alaska Division of Geological & Geophysical Surveys Report of Investigation 2011-7, 65 p., 4 sheets. https://doi.org/10.14509/23244
Layer Name: metadata
Layer Description: metadata files, read me files and reports
Layer Name: hypothetical-composite-line
Layer Description: Estimated, "maximum credible scenario" inundation line that encompasses the maximum extent of flooding based on model simulation of all credible source scenarios and historical observations
Layer Name: hypothetical-composite-line-half-m-depth
Layer Description: Extent of potential 0.5 meter water flow depth
Layer Name: hypothetical-composite-line-two-m-depth
Layer Description: Extent of potential 2 meter water flow depth
Layer Name: landslide-scenario-10
Layer Description: Scenario 10. Repeat of the 1964 event
Layer Name: landslide-scenario-11
Layer Description: Scenario 11. Hypothetical event: Major underwater slide complex offshore of the northern shore of Passage Canal
Layer Name: landslide-scenario-13
Layer Description: Scenario 13. Hypothetical event: Simultaneous failure of underwater slide complexes described by scenarios 10-12
Layer Name: max-flow-depth
Layer Description: Raster image depicting maximum composite flow depths over dry land. Pixel values provide the modeled depth (in meters) of maximum inundation.
Layer Name: mhhw-shoreline
Layer Description: The modern shoreline (mean higher high water - MHHW) of the study area at the time of publication
Layer Name: tectonic-scenario-01
Layer Description: Scenario 1. Repeat of the 1964 event: Source function based on coseismic deformation model by Johnson and others (1996)
Layer Name: tectonic-scenario-02
Layer Description: Scenario 2. Repeat of the 1964 event: Source function based on coseismic deformation model by Suito and Freymueller (2009)
Layer Name: tectonic-scenario-05
Layer Description: Scenario 5. Rupture of the Cascadia zone, including portions of the margin along the British Columbia and northern California shores
The DGGS metadata standard extends the FGDC standard to include elements that are required to facilitate our internal data management. These elements, referred to as "layers," group and describe files that have intrinsic logical or topological relationships and correspond to subdirectories within the data distribution package. The metadata layer provides the metadata or other documentation files. Attribute information for each data layer is described in this metadata file under the "Entity_and_Attribute_Information" section. Data layer contents:
>mhhw-shoreline: The modern shoreline (mean higher high water - MHHW) of the study area at the time of publication; see Grid Development and Data Sources section of this report to learn more about how this file was created.
>hypothetical-composite-line: Estimated, "maximum credible scenario" inundation line that encompasses the maximum extent of flooding based on model simulation of all credible source scenarios and historical observations. The "maximum credible scenario" inundation line becomes a basis for local tsunami hazard planning and development of evacuation maps.
>hypothetical-composite-line-half-m-depth: Extent of potential 0.5 meter water flow depth
>hypothetical-composite-line-two-m-depth: Extent of potential 2 meter water flow depth
>tectonic-scenario-01: Scenario 1. Repeat of the 1964 event: Source function based on coseismic deformation model by Johnson and others (1996)
>tectonic-scenario-02: Scenario 2. Repeat of the 1964 event: Source function based on coseismic deformation model by Suito and Freymueller (2009)
>tectonic-scenario-05: Scenario 5. Rupture of the Cascadia zone, including portions of the margin along the British Columbia and northern California shores
>landslide-scenario-10: Scenario 10. Repeat of the 1964 event: Major underwater slide complexes of the 1964 earthquake - Harbor, Airport, and Glacier (HAG) landslides
>landslide-scenario-11: Scenario 11. Hypothetical event: Major underwater slide complex offshore of the northern shore of Passage Canal
>landslide-scenario-12: Scenario 12. Hypothetical event: Major underwater slide complex offshore of the Billings Creek delta
>landslide-scenario-13: Scenario 13. Hypothetical event: Simultaneous failure of underwater slide complexes described by scenarios 10-12
>max-flow-depth: Raster image depicting maximum composite flow depths over dry land. Pixel values provide the modeled depth (in meters) of maximum inundation. For each grid point, the pixel value provides the modeled depth of water (in meters) over previously dry land, representing the maximum depth value of all calculated tsunami scenarios.
Metadata is the data about the data and answers "Who, what, when, where, how and why?" about the dataset. Please see the DGGS Metadata README page for information about our metadata.
This dataset includes results of numerical modeling of earthquake-generated tsunami waves for a specific community. Modeling was completed using the best information and tsunami modeling software available at the time of analysis. They are numerical solutions and, while they are believed to be accurate, their ultimate accuracy during an actual tsunami will depend on the specifics of earth deformations, on-land construction, tide level, and other parameters at the time of the tsunami. Actual areas of inundation may differ from areas shown in this dataset. Landslide tsunami sources may not be included in the modeling due to unknown potential impact of such events on a given community; please refer to accompanying report for more information on tsunami sources used for this study. The limits of inundation shown should only be used as a general guideline for emergency planning and response action in the event of a major tsunamigenic earthquake. These results are not intended for any other use, including land-use regulation or actuarial purposes. Any hard copies or published datasets utilizing these datasets shall clearly indicate their source. If the user has modified the data in any way, the user is obligated to describe the types of modifications the user has made. The user specifically agrees not to misrepresent these datasets, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys. The State of Alaska makes no express or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product.
Alaska Division of Geological & Geophysical Surveys
3354 College Road
Fairbanks, AK 99709-3707
Phone Number: (907)451-5020
Fax Number: (907)451-5050