Modified Mercalli Intensity based on peak ground acceleration, with a 10% probability of exceedance in 50 years

A seismic hazard model for South America, based on a smoothed (gridded) seismicity model, a subduction model, a crustal fault model, and a ground motion model, has been produced by the U.S. Geological Survey. These models are combined to account for ground shaking from earthquakes on known faults as well as earthquakes on un-modeled faults. This data set represents the results of calculations of hazard curves for a grid of points with a spacing of 0.1 degrees in latitude and longitude. It represents Modified Mercalli Intensity (MMI) with a 10% probability of exceedance in 50 year. The maps and data were derived from PGA ground-motion conversions of Worden et al. (2012), and include soil amplification based on a topographic proxy of Allen and Wald (2009), and site amplification based on Seyhan and Stewart (2014) relationships.

Data e Risorse

Campo Valore
accessLevel public
bureauCode {010:12}
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datagov_dedupe_retained 20220721212438
identifier USGS:59c9840ee4b017cf313f1146
metadata_type geospatial
modified 20200818
old-spatial {"type": "Polygon", "coordinates": [[[-85.05, -70.05], [-85.05, 15.05], [ -19.95, 15.05], [ -19.95, -70.05], [-85.05, -70.05]]]}
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
source_datajson_identifier true
source_hash 83cbaeae0fee50658c349178d20691137aa79378
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-85.05, -70.05], [-85.05, 15.05], [ -19.95, 15.05], [ -19.95, -70.05], [-85.05, -70.05]]]}
theme {geospatial}
Gruppi
  • AmeriGEOSS
  • National Provider
  • North America
Tag
  • amerigeo
  • amerigeoss
  • argentina
  • bolivia
  • brazil
  • chile
  • ckan
  • colombia
  • earthquake
  • ecuador
  • french-guiana
  • geo
  • geoss
  • guyana
  • hazard
  • national
  • north-america
  • panama
  • paraguay
  • peru
  • risk
  • seismic
  • south-america
  • suriname
  • trinidad-and-tobago
  • united-states
  • uruguay
  • usgs-59c9840ee4b017cf313f1146
  • venezuela
isopen False
license_id notspecified
license_title License not specified
maintainer Ken Rukstales
maintainer_email rukstales@usgs.gov
metadata_created 2025-11-22T07:02:28.919202
metadata_modified 2025-11-22T07:02:28.919206
notes A seismic hazard model for South America, based on a smoothed (gridded) seismicity model, a subduction model, a crustal fault model, and a ground motion model, has been produced by the U.S. Geological Survey. These models are combined to account for ground shaking from earthquakes on known faults as well as earthquakes on un-modeled faults. This data set represents the results of calculations of hazard curves for a grid of points with a spacing of 0.1 degrees in latitude and longitude. It represents Modified Mercalli Intensity (MMI) with a 10% probability of exceedance in 50 year. The maps and data were derived from PGA ground-motion conversions of Worden et al. (2012), and include soil amplification based on a topographic proxy of Allen and Wald (2009), and site amplification based on Seyhan and Stewart (2014) relationships.
num_resources 2
num_tags 29
title Modified Mercalli Intensity based on peak ground acceleration, with a 10% probability of exceedance in 50 years