Identification_Information: Citation: Citation_Information: Originator: Eric L. Geist Originator: Florence L. Wong Publication_Date: 2006 Title: Annual probabilities of exceedance for tsunami wave heights from 0.5 to 10.5 meters, Seaside, Oregon Edition: 1 Geospatial_Data_Presentation_Form: raster digital data Online_Linkage: http://pubs.usgs.gov/ds/2006/236/catalog.shtml Larger_Work_Citation: Citation_Information: Originator: Florence L. Wong Originator: Angie J. Venturato Originator: Eric L. Geist Publication_Date: 2006 Title: Seaside, Oregon Tsunami Pilot Study - Modernization of FEMA Flood Hazard Maps: GIS Data Geospatial_Data_Presentation_Form: raster digital data Series_Information: Series_Name: U.S. Geological Survey Data Series Issue_Identification: 236 Publication_Information: Publication_Place: Menlo Park, California Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/ds/2006/236/ Description: Abstract: Probabilistic tsunami hazard assessment analysis (PTHA) was used to develop 100- and 500-year flood maps at Seaside, Oregon. This data set is the output from the PTHA model calculation and consists of annual probabilities of exceedance for tsunami wave heights from 0.5 to 10.5 meters at 0.5-meter intervals. Purpose: This data set is one of a collection of digital files of a geographic information system of spatially referenced data related to the Seaside, Oregon, Tsunami Pilot Study. Federal Emergency Management Agency (FEMA) Federal Insurance Rate Map (FIRM) guidelines do not currently exist for conducting and incorporating tsunami hazard assessments that reflect the substantial advances in tsunami research achieved in the last two decades (Tsunami Pilot Study Working Group, 2006). Therefore, as part of FEMAs Modernization Program, a Tsunami Pilot Study was carried out in the Seaside/Gearhart, Oregon, area to provide information from which tsunami mapping guidelines could be developed. This area was chosen because it is typical of coastal communities in the section of the Pacific Coast from Cape Mendocino to the Strait of Juan de Fuca. There was also considerable interest shown by state agencies and local stakeholders in mapping the tsunami threat to this area. The study was an interagency effort by scientists from the U.S. Geological Survey, the National Oceanic and Atmospheric Administration, the University of Southern California, and the Middle East Technical University. We present the GIS data from that report in this publication. These data are intended for science researchers, students, policy makers, and the general public. The data can be used with geographic information systems (GIS) software to display geologic and oceanographic information. Supplemental_Information: Data sets covered by this metadata document have prefixes iyxx_yyy where xx is a sequence number and yyy is wave height in half-meter increments (for example 005 and 010 are 0.5 and 1.0 m, respectively). iy01_005 - PTHA probabilities determined by input from all far- and near-field sources iy01_005aa - probabilities determined using only source 1 of the Alaska-Aleutian segmentation iy01_005td480 - PTHA wave heights determined using a mean inter-event time of 480 years (mean value from records) iy01_005td560 - PTHA wave heights determined using a mean inter-event time of 560 years (value from model) The data are provided as grids in xyz and as Arcinfo ASCIIGRID format files (.asc). Grid cell spacing is 0.000558-degree (~60 meters) with probability values for each of the 21 wave height intervals 0.5 to 10.5 meters at 0.5-meter intervals. Example of .xyz format: > -123.969688 46.059677 0.038109 > -123.969131 46.059677 0.038109 > -123.968575 46.059677 0.038109 > -123.968010 46.059677 0.038109 The .asc file consists of header information containing a set of keywords, followed by cell values in row-major order. The file format is > ncols 133 > nrows 183 > xllcorner -123.969967 > yllcorner 45.957843 > cellsize 0.000558 > NODATA_value -9999 > row 1 > row 2 > . . . > row n Files included in each set > iy01_005.xyz iy01_005.asc > iy02_010.xyz iy02_010.asc > iy03_015.xyz iy03_015.asc > iy04_020.xyz iy04_020.asc > iy05_025.xyz iy05_025.asc > iy06_030.xyz iy06_030.asc > iy07_035.xyz iy07_035.asc > iy08_040.xyz iy08_040.asc > iy09_045.xyz iy09_045.asc > iy10_050.xyz iy10_050.asc > iy11_055.xyz iy11_055.asc > iy12_060.xyz iy12_060.asc > iy13_065.xyz iy13_065.asc > iy14_070.xyz iy14_070.asc > iy15_075.xyz iy15_075.asc > iy16_080.xyz iy16_080.asc > iy17_085.xyz iy17_085.asc > iy18_090.xyz iy18_090.asc > iy19_095.xyz iy19_095.asc > iy20_100.xyz iy20_100.asc > iy21_105.xyz iy21_105.asc Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2006 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -123.969967 East_Bounding_Coordinate: -123.895753 North_Bounding_Coordinate: 46.059957 South_Bounding_Coordinate: 45.957843 Keywords: Theme: Theme_Keyword_Thesaurus: none Theme_Keyword: probabilistic tsunami hazard assessment Theme_Keyword: tsunamis Theme_Keyword: coastal geology Theme_Keyword: PTHA Theme_Keyword: tsunami probability Theme_Keyword: tsunami hazard Theme_Keyword: FEMA Flood Insurance Rate Map Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: environment Theme_Keyword: geoscientificInformation Theme_Keyword: oceans and estuaries Place: Place_Keyword_Thesaurus: Geographic Names Information System Place_Keyword: Seaside, Oregon Place_Keyword: Gearhart, Oregon Place_Keyword: Oregon Place_Keyword: USA Place: Place_Keyword_Thesaurus: GEOnet Names Server Place_Keyword: north Pacific Ocean Access_Constraints: None. Use_Constraints: The data, digital results, GIS layers, and map products in this database have been created specifically as part of a pilot study for FEMA's modernization of Flood Insurance Rate Maps (FIRMs) project. The results of the pilot study are intended to help FEMA draft new guidelines related to tsunami flooding for Coastal Flood Hazard Analysis and Mapping for the Pacific Coast of the United States. The results are intrinsically probabilistic and designed according to FEMA flood zone specifications: annual probabilities of exceedance of 1% and 0.2%. The data, digital results, GIS layers, and map products are not intended for other uses. In particular, the 1% and 0.2% annual exceedance probability tsunami flood maps are not to be used for emergency planning, evacuation, or other insurance purposes. Please refer to the National Tsunami Hazard Mitigation Program tsunami inundation maps for use in emergency planning. Please recognize the U.S. Geological Survey (USGS) as the source of this information. Although these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of this data, software, or related materials. 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. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Florence L. Wong Contact_Organization: U.S. Geological Survey Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 345 Middlefield Road, MS 999 City: Menlo Park State_or_Province: California Postal_Code: 94025 Country: USA Contact_Voice_Telephone: 650-329-5327 Contact_Facsimile_Telephone: 650-329-5190 Contact_Electronic_Mail_Address: fwong@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/ds/2006/236/metadata/iy03spls.jpg Browse_Graphic_File_Description: annual probabilities of exceedance for selected tsunami wave heights 0.5, 4.0, and 10.5 m. Browse_Graphic_File_Type: JPEG Native_Data_Set_Environment: Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 9.1.0.722 Cross_Reference: Citation_Information: Originator: Tsunami Pilot Study Working Group Publication_Date: 2006 Title: Seaside, Oregon Tsunami Pilot Study - Modernization of FEMA Flood Hazard Maps Edition: 1 Geospatial_Data_Presentation_Form: document Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 2006-1234 Publication_Information: Publication_Place: Menlo Park, California Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/of/2006/1234/ Cross_Reference: Citation_Information: Originator: Eric L. Geist Originator: Tom Parsons Publication_Date: 2006 Title: Probabilistic analysis of tsunami hazards Series_Information: Series_Name: Natural Hazards Issue_Identification: v. 37, n. 3, p. 277-314 Cross_Reference: Citation_Information: Originator: Mofjeld, H.O., Venturato, A.J., González, F.I., and Titov, V.V. Publication_Date: 2004 Title: Background tides and sea level variations at Seaside, Oregon Geospatial_Data_Presentation_Form: document Series_Information: Series_Name: NOAA, Technical Memorandum OAR PMEL-126, p. 15. Issue_Identification: OAR PMEL-126 Other_Citation_Details: 15 p. Online_Linkage: http://www.pmel.noaa.gov/pubs/PDF/mofj2736/mofj2736.pdf Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The maximum wave heights presented here were modeled by probabilistic tsunami hazard assessment techniques and approximate the magnitudes of a 0.2% annual probability flood. Accuracy with these estimates can be associated with uncertainty in the model results. Sources of aleatory uncertainty from fault rupture complexity and tidal stage at tsunami arrival time. For the former, the coefficient of variation is typically 20% (Geist, 2005). For the latter, the coefficient of variation is typically 7% (Mofjeld and others, 2004). A comprehensive analysis for other sources of aleatory and epistemic uncertainty has not been conducted for this pilot study. Logical_Consistency_Report: No tests of logical consistency were conducted. Completeness_Report: Complete. Lineage: Process_Step: Process_Description: Probability values were calculated as described in Tsunami Pilot Study Working Group (2006) and exported from PTHA model as xyz (longitude, latitude, probability as decimal) and converted to Arc GRID format. Process_Date: 2005 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Raster Raster_Object_Information: Raster_Object_Type: Grid Cell Row_Count: 183 Column_Count: 133 Vertical_Count: 1 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.000558 Longitude_Resolution: 0.000558 Geographic_Coordinate_Units: Decimal degrees Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: Geodetic Reference System 80 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257222 Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: Annual probabilities of exceedance for tsunamis of various wave heights. Entity_and_Attribute_Detail_Citation: None. Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing address Address: USGS Information Services Address: Box 25286 City: Denver State_or_Province: Colorado Postal_Code: 80225-0286 Country: USA Contact_Voice_Telephone: 1-888-275-8747 Contact_Electronic_Mail_Address: infoservices@usgs.gov Resource_Description: U.S. Geological Survey Data Series 236 Distribution_Liability: 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. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ARCE Format_Version_Number: 9.1 Format_Specification: ArcGIS gridascii export File_Decompression_Technique: no compression applied Transfer_Size: 0.230 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/ds/2006/236/ Fees: None Technical_Prerequisites: .xyz files may be viewed by any software that will read text fields. .asc files are best converted with the Arcinfo ASCIIGRID tool. Metadata_Reference_Information: Metadata_Date: 20060731 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Florence L. Wong Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 345 Middlefield Road, MS 999 City: Menlo Park State_or_Province: California Postal_Code: 94025 Country: USA Contact_Voice_Telephone: 650-329-5327 Contact_Facsimile_Telephone: 650-329-5190 Contact_Electronic_Mail_Address: fwong@usgs.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time Metadata_Extensions: Online_Linkage: http://www.esri.com/metadata/esriprof80.html Profile_Name: ESRI Metadata Profile