EARTHQUAKE INFORMATION
Date: 1999-08-17 at 00:01:39.80(UTC), 03:01:37 a.m local time
Surface Wave Magnitude: 7.8 (USGS)
Body Wave Magnitude: 6.3 (USGS)
Duration Magnitude: 6.7 (Kandilli)
Moment Magnitude: 7.4 (USGS, Kandilli)
Epicenter: 40.702N, 29.987E (USGS)
Depth: 17 km. (USGS)
Location
An earthquake of magnitude Mw 7.4 occurred on
the North Anatolian Fault Zone with a macroseismic epicenter near
the Gölcük town in the western part of Turkey. Distribution of large aftershocks
magnitude above 4 recorded at USGS are given below . Most of the aftershock
activity is confined to the region bounded by 40.5-40.8N and 29.8-30.0E, which covers the
area between Izmit and Adapazari to the east of the epicenter. A list of aftershock
activity will be provided soon.
Field Rupture
The right lateral displacement offset of
NAF between Sapanca Lake and Izmit Gulf was reported as 2.60m.
