Kocaeli-Golcuk Türkiye 1999 (KOERI)

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Event ID
199908170001
Event name
Kocaeli-Golcuk
Country
Türkiye
Region in the country
Northwestern Turkey
World region
Asia
Epicentral coordinates (long/lat)
POINT(29.91 40.7)
WKT GIS format
GEMECD contributing partner
KOERI
Event narrative

The 1999 İzmit earthquake (also known as the Kocaeli or Gölcük earthquake) was a 7.5 magnitude earthquake that struck northwestern Turkey on August 17, 1999, at about 3:02am local time. The event lasted for 37 seconds, killing around 17,000 people and leaving approximately half a million people homeless. Even though official sources consider casualties 17,000 people, non-official sources consider the casualties 35,000 people. The nearby city of Izmit was very badly damaged. An official Turkish estimate of October 19, 1999, placed the toll at 17,127 killed and 43,953 injured, but many sources suggest the actual figure may have been closer to 45,000 dead and a similar number injured. Reports from September 1999 show that 120,000 poorly engineered houses were damaged beyond repair, 50,000 houses were heavily damaged, 2,000 other buildings collapsed and 4,000 other buildings were heavily damaged. 300,000 people were left homeless after the earthquake. The earthquake was heavily felt in this industrialized and densely populated urban area of the country, including oil refineries, several automotive plants, and the Turkish navy headquarters and arsenal in Gölcük, increasing the severity of the loss of life and property. The earthquake also caused considerable damage in Istanbul, about 70 kilometres (43 mi) away from the earthquake's epicenter. There was extensive damage to several bridges and other structures on the Trans-European Motorway (European route E80), including 20 viaducts, 5 tunnels, and some overpasses. Damage ranged from spalling concrete to total deck collapse. The quake sparked a disastrous fire at the Tüpraş petroleum refinery. The fire began at a state-owned tank farm and was initiated by naphtha that had sloshed out of a holding tank. Breakage in water pipelines, results of the quake, nullified attempts at extinguishing the fire. Aircraft were called in to douse the flames with foam. The fire spread over the next few days, warranting the evacuation of the area within three miles of the refinery. The fire was declared under control five days later after claiming at least seventeen tanks and untold amounts of complex piping.

Date of occurrence (UTC)
1999-08-17
date
Time of occurrence (UTC)
00:02:00
time
Date of occurrence (local)
1999-08-17
date
Time of occurrence (local)
03:02:00
time
Day of the week (local)
Tuesday
Magnitude
7.5
Magnitude units
Moment (Mw)
Focal depth
16
km
Seismological data: source
AFAD
Seismological data: comment

AFAD

Overview data
Loss: Human Casualty
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People injured
43953
number
People injured: source
AFAD
People injured: comment

A total number of 15816476 people were affected by the earthquake


People seriously injured: source
-
People seriously injured: status
N/A

People missing: source
-
People missing: status
N/A

People killed
17480
number
People killed: source
AFAD
People killed: comment

AFAD


People killed due to ground shaking
17480
number
People killed due to ground shaking: source
AFAD
People killed due to ground shaking: comment

AFAD


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

People missing due to tsunami
0
number
People missing due to tsunami: source
AFAD
People missing due to tsunami: comment

AFAD

People killed due to tsunami
0
number
People killed due to tsunami: source
AFAD
People killed due to tsunami: comment

AFAD

People missing due to fire following
0
number
People missing due to fire following: source
AFAD
People missing due to fire following: comment

AFAD

People killed due to fire following
0
number
People killed due to fire following: source
AFAD
People killed due to fire following: comment

AFAD

People missing due to slope failures
0
number
People missing due to slope failures: source
AFAD
People missing due to slope failures: comment

AFAD

People killed due to slope failures
0
number
People killed due to slope failures: source
AFAD
People killed due to slope failures: comment

AFAD

Loss: Building damage
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Total number of buildings destroyed by shaking: source
-
Total number of buildings destroyed by shaking: status
N/A

Number of buildings damaged by shaking: source
-
Number of buildings damaged by shaking: status
N/A

Number of dwellings destroyed by shaking
77342
number
Number of dwellings destroyed by shaking: source
AFAD
Number of dwellings destroyed by shaking: comment

A total number of 77342 dwellings are heavy damaged


Number of dwellings damaged by shaking
167041
number
Number of dwellings damaged by shaking: source
AFAD
Number of dwellings damaged by shaking: comment

A total number of 77169 of 167041 dwellings are moderate damaged and the rest is light damaged


Loss: Socioeconomic
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People homeless
300000
number
People homeless: source
AFAD

Direct economic loss
11400
million US$
Direct economic loss: source
Munich Re
Direct economic loss: comment

excl. 600 million US$ in insured losses


Indirect economic loss: source
-
Indirect economic loss: status
N/A

Insured loss
600
million US$
Insured loss: source
Munich Re

Demographics
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hide
Total number of buildings: source
-
Total number of buildings: status
N/A