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Green Earthquake Alert in Peru |
Summary
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On 8/15/2007 11:41:02 PM UTC an earthquake of magnitude 7.5 has struck the very highly populated
region of Near Coast Of Central Peru in Peru.
| Humanitarian Impact |
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| Population vulnerability |
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| Tsunami probability |
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| Landslide probability |
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| Nuclear radiation probability |
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Whether international humanitarian aid is needed must be decided by an
expert. However, the following automatically calculated elements can help. This
earthquake has potentially a low humanitarian impact
and the affected region has low
vulnerability to natural disasters.
| Event Date Univ. Time: | Wed, 8/15/2007 23:41 UTC |
| European Time of the event: | Thu, 8/16/2007 01:41 CEST (Brussels, Paris, Rome) |
| East America Time of the event: | Wed, 8/15/2007 18:41 EST (New York, Washington) |
| West America Time of the event: | Wed, 8/15/2007 15:41 PST (San Francisco, Los Angeles) |
| East Asia Time of the event: | Thu, 8/16/2007 08:41 JTI (Tokyo) |
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| This email report was automatically created or updated by a computer on: 8/16/2007 12:31:09 AM UTC (50 minutes after the event) |
| Word/Fax version |
Explanation of alert calculation:
The impact model combines magnitude (M), population within 100km (P) and vulnerability ECHO average score (V) using the formula:
alertscore = max(M-4.5,0) * log10(max(P / 80000,0))^ 0.5 * max(V,0.5) ^ 1.5 / 3
The weighted product of magnitude, population and vulnerability (1.25) gives an alertscore of 1.98969147377879
Then alert is Red if alertscore>2, Orange if alertscore>1 and Green if alertscore<=1.
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 Population
Density near epicenter (people/km2). Image area: 6x4 decimal
degrees (approx. 650x450km2).
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| The earthquake did not happen in an ocean basin.
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Earthquake Event
Characteristics
- Magnitude: 7.5 M
- Depth: 200 km
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Location
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Location (Lat/Long): -12.22 | -76.57
- Country: Peru
- Province: Lima (population: 8126700)
- Region: Near Coast Of Central Peru
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Time
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 UTC/GMT
(Greenwich time): 8/15/2007 11:41:02 PM
- Local time: 8/15/2007 6:34:45 PM
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Previous reports for this earthquake.
| ID | Event Date/Time | Lat/Lon | Magnitude | Depth (km) | Source | Publication Date/Time | Delay |
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 29560 | 8/15/2007 11:40:55 PM UTC | -13.416, -76.436 | 7.7 | 18 | NEIC | 8/16/2007 1:56:03 AM CET | 15min | | 29561 | 8/15/2007 11:40:58 PM UTC | -13.3217, -76.5084 | 7.5 | 40.7 | NEIC | 8/16/2007 2:29:38 AM CET | 48min |  29562 | 8/15/2007 11:41:02 PM UTC | -12.22, -76.57 | 7.5 | 200 | EMSC | 8/16/2007 2:31:09 AM CET | 50min |
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About the data
Source: European-Mediterranean Seismological Centre (EMSC)
Magnitude:
definition
Depth:
In general, shallow earthquakes are most destructive.
Earthquakes deeper than 300km rarely cause damage and casualties. Default
values of depth (33km) are given if it could not be accurately determined.
Region: as specified by the Source
Tectonic map
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Earthquake Impact Details
Potentially affected People
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Population Data |
| Radius (km) |
Population |
Density (people/km²) |
| 1 |
0 |
0 |
| 2 |
48 |
3 |
| 5 |
555 |
7 |
| 10 |
2699 |
8 |
| 20 |
11897 |
9 |
| 50 |
1275245 |
162 |
| 100 |
8512018 |
270 |
| 200 |
10765440 |
85 |
The population in the area of this earthquake if 162
people/km².
The earthquake occurred at 18h local time.
At this time a day, more people are at work and therefore more
vulnerable to collapsing office buildings.
During traffic hours, people can be affected by collapsing bridges and other
road infrastructure.
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About the data
Population data: derived from the
LandScan 2002 dataset
provided by
Oak Ridge National Laboratory,
which disaggregated census data into pixels of ~1km2 (or 30 arc
seconds).
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Damage
The affected region has low level of urban area (0.1%) and a medium level of cultivated area (3.9%).
In urban areas more damage can be expected than in cultivated or natural areas.
| Radius (km) | urban areas | cultivated areas | other |
|---|
| 200 |
0.11% |
3.95% |
95.92% |
| 100 |
0.34% |
1.13% |
98.52% |
| 50 |
0% |
0.65% |
99.34% |
| 10 |
0% |
0% |
100% |
In general, earthquakes of magnitude 7 to 8
are classified as Major earthquakes. They can cause serious damage over areas greater than 100 kilometers across.
For more information on the intensity of the earthquake around the epicentre, please refer to the USGS ShakeMap product (http://earthquake.usgs.gov/shakemap/global/shake/index.html)
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About the data
Land use data from
GLC2000.
This data is specific to this earthquake.
This damage assessment is based on the
average damage of earthquakes over a 100 year period as compiled by USGS. The
information is not specific to this earthquake.
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Resilience and Vulnerability
Resilience is the capacity of the population to cope with a hazard. Since
much of investments in earthquake preparedness and available funds for quick
response is related to household income, the GDP per capita can be used as a
rough indicator of resilience.
Peru has a GDP per capita of 2345 PPP$ (Parity
Purchasing Power Dollar, about 1 Euro) and is therefore part of the low
level income countries. Therefore, the earthquake happened in an area of low
resilience.
Based on the combination of 9 indicators, ECHO attributes Peru a low
vulnerability.
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About the data
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Exposure
Both conditions for survival and conditions for delivering aid strongly
depend on the current weather and temperature. The following graphs show the
current and forecast weather.
Current weather conditions and forecasts at earthquake location (lat: -12.22
- long: -76.57)
More detailed observations at closest weather station (Las Palmas):
WeatherByWeb -
NOAA
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About the data
Source:
www.calle.com/world.
The data is not very reliable, but it gives an indication for remote regions
where more detailed information is not available. The data is interpolated for
the given latitude and longitude from the closest airport weather stations.
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Secondary
effects
Probability of secondary effects:
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Landslides: The maximum slope in the area of the earthquake is 87.085%
and the maximum altitude is 5534 m. Since this is a high
slope, the risk of earthquake induced landslides is high.
Note, however, that the slope data is not reliable on a local scale, while
landslides depend very much on local topography, soil and meteorological
conditions.
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Nuclear power plants:
There are no nuclear facilities nearby the epicenter.
- Tsunami: based on magnitude alone, there is a unknown probability of a tsunami. However, this probability must
be confirmed by oceanographic measurements or observations. Please refer to NOAA's tsunami alert system for information on
tsunamis in the Pacific Ocean:
http://tsunami.gov/. In case of a tsunami, the propagation is shown in the figure on top of this report.
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About the data
Landslides:
slope and altitude are derived from the
gtopo30 dataset provided
by USGS. The thresholds used for landslide related slope classes are: 0-30% -
low risk (green), 30-60% medium risk (orange), 60-100% high risk (red).
Nuclear radiation:
the distance to nuclear installations is evaluated based
on a 1999 UN dataset containing the location of nuclear plants in the world. If
plants are near and the earthquake magnitude is above 6.5, the alert is set to orange. Note that the location of
plants is approximate with errors of up to 100km.
Tsunami: The JRC Tsunami model (http://tsunami.jrc.it/model)
can be used solely to have a first estimate of the Tsunami wave propagation
time. It does not predict predict the occurrence, the initial or final height of
the wave, its run-up or the inundation depth. |
Location
Description
The earthquake happened in Peru, 54km
from the city of Lima. The nearest populated
places are Antioqu¡a (16km), Estancias de Gordo (19km), Lacrapucro (16km), Santo Domingo de los Olleros (5km), Calahuaya (18km), Cantera (20km), Cucul¡ (12km), Tinaja (9km), Chichacara (20km), Matar (13km), Ocurure (19km), Anchicocha (19km).
It is a mountainous
region with a maximum altitude of 5534 m.
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About the data
Maps and description of location are
based on Global Discovery data, provided by
Europa Technology. The dataset is based on
VMAP0 and is at scale 1:1.000.000. |
Getting there and away
The nearest civilian airport (Las Palmas) is at 47km
from the epicenter.
See the map for more details.
The estimated geographical coordinates of the earthquake are: 12.22 South
and 76.57 West.
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Dynamic Maps
Mapping material available on the DMA for Peru:
image area: approx. 130x90km2
image area: approx. 65x45km2
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Legend of symbols in this page:
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Accuracy of information (move mouse over symbol to see value) |
Disclaimer
While we try everything to ensure accuracy, this information is purely
indicative and should not be used for any decision making without alternate
sources of information. The JRC is not responsible for any damage or loss
resulting from the use of the information presented on this website.
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