M 5.5 - CENTRAL PERU

Summary

Population Exposure

 Population per ˜1 square km from Landscan 2005

Selected City Exposure

MMI	City	Population
V	Oxapampa	7k
V	Villa Rica	7k
IV	Perene	6k
IV	Carhuamayo	9k
IV	Ambo	6k
IV	San Ramon	14k
IV	Huanuco	147k
IV	Huancayo	376k
IV	Lima	7737k
IV	Callao	813k
IV	Chosica	88k

Shaking Intensity

    MMI

Overall, the population in this region resides in structures that are vulnerable to earthquake shaking, though some resistant structures exist. A magnitude 5.5 earthquake 329 km Northeast of this one struck Peru on April 18, 1981 (UTC), with estimated population exposures of 160,000 at intensity VI and 254,000 at intensity V, resulting in an estimated 8 fatalities. On October 03, 1974 (UTC), a magnitude 7.6 earthquake and tsunami 306 km Northeast of this one struck Lima, Peru, with estimated population exposures of 43,000 at intensity VIII and 4,366,000 at intensity VII, resulting in an estimated 78 fatalities. Recent earthquakes in this area have caused landslides that may have contributed to losses.

PAGER results are generally available on the Internet within 30 minutes of the earthquake's occurrence. However, information on the extent of shaking will be uncertain in the minutes and hours following an earthquake and typically improves as additional sensor data and reported intensities are acquired and incorporated into models of the earthquake's source. Users of PAGER exposure estimates should account for uncertainty and always seek the most current PAGER release for any earthquake.

Maps

Map of MMI contours plotted over population per ˜1 square km (see gray scale bar on top of map). The regions of integer MMI values are separated by the thick contour lines and labeled with Roman numerals. The total population exposure to a given MMI value is obtained by summing the population between the thick contour lines. This total is shown in population exposure table.

Map of shaking intensity. This map shows the estimated MMI as a continuous color scale. The ground shaking estimates can be obtained from http://earthquake.usgs.gov/shakemap/.

Exposure

Table showing population exposed to different estimated Modified Mercalli Intensity (MMI) levels and the possible damage at different intensity levels for resistant and vulnerable structures. MMI describes the severity of an earthquake in terms of its effect on humans and structures and is a rough measure of the amount of shaking at a given location. Unlike earthquake magnitude, intensity varies with distance from the fault, and is influenced by the depth of the earthquake and the types of soils in the shaken region. Population outside the map bounds are not included in the totals.

Downloads

• 
  onePAGER PDF
  341 kB
• 
  Exposure XML
  20 kB
• 
  Shakemap
  38 kB
• 
  Population Map
  75 kB
• 
  Population PDF
  164 kB

Details