Earthquake scenario and probabilistic ground shaking maps for the Portland, Oregon, metropolitan area

Ivan Wong, Walter Silva, Jacqueline Bott, Douglas Wright, Patricia Thomas, Nick Gregor, Sylvia Li, Matthew Mabey, Anna Sojourner, and Yumei Wang

Oregon Department of Geology and Mineral Industries Interpretive Map Series No. 16
(IMS-16)

CAUTION: Printed copies of this map are available from DOGAMI. This web resource should NOT be cited or referenced, only the original source should be referenced. Some alterations to the final printed materials were made that were NOT made to the electronic copy. The only official reference should be the printed copy from DOGAMI, not the maps on this web site. These maps are provided as a service of convenience, not as an official publication outlet.

See IMS-15 for the peak horizontal acceleration at the ground surface map of the Portland metropolitan area

Documentation

• Readme.txt (with CD-ROM version of maps)
• Metadata
• Explanatory Text

Maps

JPEG Images

These are JPEG images of the various maps in the reports

• Sheet 1 (~2 Mb). Earthquake scenario ground shaking map for the Portland, Oregon, metropolitan area, Portland Hills fault M 6.8 earthquake, 0.2 sec spectral acceleration at the ground surface (m68_5hz)
• Sheet 2  (~2 Mb). Earthquake scenario ground shaking map for the Portland, Oregon, metropolitan area, Portland Hills fault M 6.8 earthquake, 1.0 sec spectral acceleration at the ground surface (m68_1hz)
• IMS-15 Earthquake scenario ground shaking map for the Portland, Oregon, metropolitan area, Portland Hills fault M 6.8 earthquake, peak horizontal acceleration at the ground surface  (m68_pga)
• Sheet 3  (~2 Mb). Earthquake scenario ground shaking map for the Portland, Oregon, metropolitan area, Cascadia subduction zone M 9.0 earthquake, peak horizontal acceleration at the ground surface (m90_pga)
• Sheet 4  (~2 Mb). Earthquake scenario ground shaking map for the Portland, Oregon, metropolitan area, Cascadia subduction zone M 9.0 earthquake, 0.2 sec horizontal spectral acceleration at the ground surface (m90_5hz)
• Sheet 5  (~2 Mb). Earthquake scenario ground shaking map for the Portland, Oregon, metropolitan area, Cascadia subduction zone M 9.0 earthquake, 1.0 sec horizontal spectral acceleration at the ground surface (m90_1hz)
• Sheet 6  (~2 Mb). Probabilistic earthquake ground shaking map for the Portland, Oregon metropolitan area, 10% probability of exceedance in 50 years, peak horizontal acceleration at the ground surface (500yrs_pga)
• Sheet 7  (~2 Mb). Probabilistic earthquake ground shaking map for the Portland, Oregon metropolitan area, 10% probability of exceedance in 50 years, 0.2 sec horizontal spectral acceleration at the ground surface (500yrs_5hz)
• Sheet 8  (~2 Mb). Probabilistic earthquake ground shaking map for the Portland, Oregon metropolitan area, 10% probability of exceedance in 50 years, 1.0 sec horizontal spectral acceleration at the ground surface (500yrs_5hz)
• Sheet 9  (~2 Mb). Probabilistic earthquake ground shaking map for the Portland, Oregon, metropolitan area, 2% probability of exceedance in 50 years, peak horizontal acceleration at the ground surface (2500yrs_pga)
• Sheet 10  (~2 Mb). Probabilistic earthquake ground shaking map for the Portland, Oregon, metropolitan area, 2% probability of exceedance in 50 years, 0.2 sec horizontal spectral acceleration at the ground surface (2500yrs_5hz)
• Sheet 11  (~2 Mb). Probabilistic earthquake ground shaking map for the Portland, Oregon, metropolitan area, 2% probability of exceedance in 50 years, 1.0 sec horizontal spectral acceleration at the ground surface (2500yrs_1hz)

ArcView Shapefiles

Each shapefile (consisting of  *.dbf, *.shp, and *.shx files) is compressed using pkzip. Each zip is less than 35 Kb.

• Sheet 1 Earthquake scenario ground shaking map for the Portland, Oregon, metropolitan area, Portland Hills fault M 6.8 earthquake, 0.2 sec spectral acceleration at the ground surface (m68_5hz)
• Sheet 2 Earthquake scenario ground shaking map for the Portland, Oregon, metropolitan area, Portland Hills fault M 6.8 earthquake, 1.0 sec spectral acceleration at the ground surface (m68_1hz)
• IMS-15 Earthquake scenario ground shaking map for the Portland, Oregon, metropolitan area, Portland Hills fault M 6.8 earthquake, peak horizontal acceleration at the ground surface  (m68_pga)
• Sheet 3 Earthquake scenario ground shaking map for the Portland, Oregon, metropolitan area, Cascadia subduction zone M 9.0 earthquake, peak horizontal acceleration at the ground surface (m90_pga)
• Sheet 4 Earthquake scenario ground shaking map for the Portland, Oregon, metropolitan area, Cascadia subduction zone M 9.0 earthquake, 0.2 sec horizontal spectral acceleration at the ground surface (m90_5hz)
• Sheet 5 Earthquake scenario ground shaking map for the Portland, Oregon, metropolitan area, Cascadia subduction zone M 9.0 earthquake, 1.0 sec horizontal spectral acceleration at the ground surface (m90_1hz)
• Sheet 6 Probabilistic earthquake ground shaking map for the Portland, Oregon metropolitan area, 10% probability of exceedance in 50 years, peak horizontal acceleration at the ground surface (500yrs_pga)
• Sheet 7 Probabilistic earthquake ground shaking map for the Portland, Oregon metropolitan area, 10% probability of exceedance in 50 years, 0.2 sec horizontal spectral acceleration at the ground surface (500yrs_5hz)
• Sheet 8 Probabilistic earthquake ground shaking map for the Portland, Oregon metropolitan area, 10% probability of exceedance in 50 years, 1.0 sec horizontal spectral acceleration at the ground surface (500yrs_5hz)
• Sheet 9 Probabilistic earthquake ground shaking map for the Portland, Oregon, metropolitan area, 2% probability of exceedance in 50 years, peak horizontal acceleration at the ground surface (2500yrs_pga)
• Sheet 10 Probabilistic earthquake ground shaking map for the Portland, Oregon, metropolitan area, 2% probability of exceedance in 50 years, 0.2 sec horizontal spectral acceleration at the ground surface (2500yrs_5hz)
• Sheet 11 Probabilistic earthquake ground shaking map for the Portland, Oregon, metropolitan area, 2% probability of exceedance in 50 years, 1.0 sec horizontal spectral acceleration at the ground surface (2500yrs_1hz)

All Coverages (250 kb)