Petersen, Mark D.
Mueller, Charles S.
Moschetti, Morgan P.
Hoover, Susan M.
Rukstales, Kenneth S.
McNamara, Daniel E.
Williams, Robert A.
Shumway, Allison M.
Powers, Peter M.
Earle, Paul S.
Llenos, Andrea L.
Michael, Andrew J.
Rubinstein, Justin L.
Norbeck, Jack H.
Cochran, Elizabeth S.
20180301
0.2-second spectral response acceleration (5% of critical damping) with a 1% probability of exceedance in 1 year
shapefile
Digital geospatial data and supporting metadata can be downloaded from:
https://doi.org/10.5066/F7Cf9PC4
https://doi.org/10.5066/F7Cf9PC4
Petersen, Mark D.
Mueller, Charles S.
Moschetti, Morgan P.
Hoover, Susan M.
Rukstales, Kenneth S.
McNamara, Daniel E.
Williams, Robert A.
Shumway, Allison M.
Powers, Peter M.
Earle, Paul S.
Llenos, Andrea L.
Michael, Andrew J.
Rubinstein, Justin L.
Norbeck, Jack H.
Cochran, Elizabeth S.
20180301
2018 One-Year Seismic Hazard Forecast for the Central and Eastern United States from Induced and Natural Earthquakes
map
Seismological Research Letters
Volume 89, Number3.
Albany, CA
Seismological Society of America
https://doi.org/10.1785/0220180005
A one-year seismic hazard forecast for the Central and Eastern United States, based on induced and natural earthquakes, has been produced by the U.S. Geological Survey. The model assumes that earthquake rates calculated from several different time windows will remain relatively stationary and can be used to forecast earthquake hazard and damage intensity for the year 2018. This assessment is the first step in developing an operational earthquake forecast for the CEUS, and the analysis could be revised with updated seismicity and model parameters. Consensus input models consider alternative earthquake catalog durations, smoothing parameters, maximum magnitudes, and ground motion estimates, and represent uncertainties in earthquake occurrence and diversity of opinion in the science community. Near some areas of active induced earthquakes, hazard is higher than in the 2014 USGS National Seismic Hazard Model (NSHM) by more than a factor of 3; the 2014 NSHM did not consider induced earthquakes. In some areas, previously observed induced earthquakes have stopped, so the seismic hazard reverts back to the 2014 NSHM.
This data set represents the results of calculations of hazard curves for a grid of points with a spacing of 0.05 degrees in latitude and longitude. This particular data set is for horizontal spectral response acceleration for 0.2-second period with a 1 percent probability of exceedance in 1 year. The data are for the Western United States and are based on the long-term 2014 National Seismic Hazard Model.
This map is intended to summarize the available quantitative information about seismic ground motion hazard for the conterminous United States from geologic and geophysical sources.
20180101
20181231
publication date
None planned
-125.0
-98.65
50.0
24.6
none
Seismic
Earthquake
Hazard
Induced
Natural
USGS Metadata Identifier
USGS:5a90ade1e4b0699060675016
http://geonames.usgs.gov/
Arizona
California
Colorado
Idaho
Montana
Nevada
New Mexico
Oregon
Texas
Utah
Washington
Wyoming
USA
United States
none
2018
None
The data are not to be used for areas outside the conterminous United States. Acknowledgment of the U.S. Geological Survey, National Seismic Hazard Mapping Project would be appreciated in products derived from these data.
Ken Rukstales
U.S. Geological Survey - Geologic Hazards Science Center
mailing address
Box 25046, MS 966
Denver
CO
80225
USA
303-273-8677
rukstales@usgs.gov
Microsoft Windows 7
Esri ArcGIS 10.3
This data set is based on a seismological model. The following report provides information on quality assessment for the data set:
Petersen, M.D., Mueller, C.S., Moschetti, M.P., Hoover, S.M., Rukstales, K.S., McNamara, D.E., Williams, R.A., Shumway, A.M., Powers, P.M., Earle, P.S., Llenos, A.L., Michael, A.J., Rubinstein, J.L., Norbeck, J.H., and Cochran, E.S., 2018, 2018 One-Year Seismic Hazard Forecast for the Central and Eastern United States from Induced and Natural Earthquakes: Seismological Research Letters, Volume 89, Number3.
Polygon topology is present. Data were checked for gaps, slivers and polygon closure using topology tools in ArcGIS and visually.
Data are complete. No features were generalized. All features are attributed.
The location of features is based on calculations of a seismological model for the study area. The location of each point is considered to be correct within the confines of computer accuracy.
Based upon the long-term 2014 National Seismic Hazard Model, a suite of hazard curves were calculated for an equally spaced grid of points covering the conterminous United States. The grid has a cell spacing of 0.05 degrees in both latitude and longitude. Using log-log interpolation, the hazard curves at each grid point were used to determine the ground motions that have an annual frequency of exceedance of 0.01005 (100 year return period). The data were imported into a grid and then contoured using ArcGIS. The desired final contours were selected and polygon topology was ascertained as well as appropriate feature attributes.
2018
Vector
G-polygon
73
Albers Conical Equal Area
29.5
45.5
-95.0
0.0
0.0
0.0
coordinate pair
0.0001
0.0001
meters
D_Clarke_1866
Clarke 1866
6378206.4
294.978698
WUS_1PctIn1Yr_5Hz.shp
Areas of horizontal spectral response acceleration for 0.2-second period within the specified range, with a 1 percent probability of exceedance in 1 year.
USGS
FID
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
Shape
Feature geometry.
Esri
Coordinates defining the features.
ValueRange
Acceleration values (%g) within the polygon range between the given values
USGS
< 2
Acceleration values within the polygon are less than 2% g
USGS
2-4
Acceleration values within the polygon range from 2% to 4% g
USGS
4-6
Acceleration values within the polygon range from 4% to 6% g
USGS
6-8
Acceleration values within the polygon range from 6% to 8% g
USGS
8-12
Acceleration values within the polygon range from 8% to 12% g
USGS
12-16
Acceleration values within the polygon range from 12% to 16% g
USGS
16-20
Acceleration values within the polygon range from 16% to 20% g
USGS
20-30
Acceleration values within the polygon range from 20% to 30% g
USGS
30-40
Acceleration values within the polygon range from 30% to 40% g
USGS
40-60
Acceleration values within the polygon range from 40% to 60% g
USGS
60-80
Acceleration values within the polygon range from 60% to 80% g
USGS
>80
Acceleration values within the polygon are greater than 80% g
USGS
U.S. Geological Survey - ScienceBase
mailing address
Denver Federal Center, Building 810, Mail Stop 302
Lakewood
CO
80215
USA
1-888-275-8747
sciencebase@usgs.gov
Downloadable geospatial data sets in shapefile format.
Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this information product, for the most part, is in the public domain, it also contains copyrighted materials as noted in the text. Permission to reproduce copyrighted items must be secured from the copyright owner whenever applicable. The data have been approved for release and publication by the U.S. Geological Survey (USGS). Although the data have been subjected to rigorous review and are substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, the data are released on the condition that neither the USGS nor the U.S. Government may be held liable for any damages resulting from authorized or unauthorized use. Although the data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the display or utility of the data on any other system, or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and/or contained herein. Users of the data are advised to read all metadata and associated documentation thoroughly to understand appropriate use and data limitations.
Shapefile
10.3
ArcGIS version 10.3 shapefile format
0.2-second spectral response acceleration (5% of critical damping) with a 1% probability of exceedance in 1 year
Files need to be decompressed using winzip or similar utility
1.3
https://doi.org/10.5066/F7RV0KWR
none
20200818
U.S. Geological Survey - Geologic Hazards Science Center
Ken Rukstales
mailing address
Box 25046, MS 966
Lakewood
CO
80225
USA
303-273-8677
ghsc_metadata@usgs.gov
FGDC Content Standards for Digital Geospatial Metadata
FGDC-STD-001-1998
local time