Ancash (Chimbote) Peru 1970 (ERNAL)

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Event ID
197005312023
Event name
Ancash (Chimbote)
Country
Peru
Epicentral coordinates (long/lat)
POINT(-78.842 -9.248)
WKT GIS format
GEMECD contributing partner
ERNAL
Event narrative

The Peru earthquake of May 31st 1970, was by far the most destructive historic earthquake in the Western Hemisphere and ranks high among the world's catastrophic natural disasters. Within an area of about 65,000 square kilometers in west central Perú the earthquake took an estimated 70,000 lives, caused 50,000 injuries, and destroyed or rendered uninhabitable roughly 186,000 buildings, respresenting 80% of all structures in the area (statistics from Comité Nacional de Emergencia del Perú, July 2nd, 1970). Within the affected area many landslides and one cataclysmic debris avalanche disrupted communications and temporaly blocked ground access to many of the afflicted communities in the Andes Mountains. The single, most devastating event was the large debris avalanche that originated from the north peak of Huascaran, fallin 12,000 ft and traveling 7 miles at an average speed of roughly 200 miles per hour to destroy the villages of Yungay and Ranrahirca. Damage resulting from vibrational effects was severe. The most intense vibrational damage occurred along the coast at Chimbote and Casma where most houses and buildings of adobe construction were destroyed or severely damage.

Date of occurrence (UTC)
1970-05-31
date
Time of occurrence (UTC)
20:23:00
time
Date of occurrence (local)
1970-05-31
date
Time of occurrence (local)
15:23:00
time
Day of the week (local)
Sunday
was it a holiday
Yes
boolean
Magnitude
7.5
Magnitude units
Body (Mb)
Focal depth
73.2
km
Seismological data: source
USGS
Seismological data: comment

ShakeMap Atlas

Overview data
Loss: Human Casualty
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People injured
143500
number
People injured: source
CEQID
People injured: status
Approximate

People seriously injured: status
N/A

People missing
35000
number
People missing: source
CEQID
People missing: status
Approximate

People killed
32000
number
People killed: source
CEQID
People killed: comment

The number killed excluding those missing

People killed: status
Approximate

People killed due to ground shaking
49000
number
People killed due to ground shaking: source
CEQID
People killed due to ground shaking: status
Approximate

People dying post catastrophe due to shaking: status
N/A

People missing due to tsunami
0
number
People killed due to tsunami
0
number
People missing due to fire following
0
number
People killed due to fire following
0
number
People missing due to slope failures
16000
number
People missing due to slope failures: source
CEQID
People killed due to slope failures
2000
number
People killed due to slope failures: source
CEQID
Loss: Building damage
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Total number of buildings destroyed by shaking: status
N/A

Number of buildings damaged by shaking: status
N/A

Number of dwellings destroyed by shaking
186000
number

Number of dwellings damaged by shaking: status
N/A

Loss: Socioeconomic
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People homeless
1700000
number
People homeless: status
Approximate

Direct economic loss
507
million US$
Direct economic loss: source
CEQID
Direct economic loss: comment

530 mill US$ (NGDC)


Indirect economic loss: status
N/A

Insured loss: status
N/A

Demographics
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Total number of buildings: status
N/A