Copyright Information: All images are in the public domain and available for free. If you use this image, credit NOAA/NGDC, Jose C. Borrero, University of Southern California. |
Four identical buildings at Halidere. Only one of the structures failed. The failure was probably due to unconsolidated slope soils. Note the position of the boats on shore in the center foreground. In Halidere, all of the boats normally on the beaches floated 30-50 meters up the streets. The measured runup here was between one and two meters. A mooring buoy was deposited in one resident's back yard. Seaweed traces were found 50 meters up a street. The residents reported that the sea level had risen two meters or more and that a beach in front of the seawall had disappeared. A road ended abruptly in the bay. Everything had subsided about two meters. Image Credit: Jose C. Borrero. University of Southern California August 17, 1999 Izmit (Kocaeli) Turkey earthquake On August 17, 1999, at 3:02 am local time (00:02 GMT) a magnitude (Mw) 7.4 earthquake occurred on the northern Anatolian fault. The epicenter was located very close to the south shore of the Bay of Izmit, an eastward extension of the Marmara Sea. The location of this earthquake and its proximity to a populous region on the Bay of Izmit contributed greatly to its damaging effects. The total estimated loss for port facilities in the region was around $200 million (US). Subsidence and slumping caused much of the coastal damage, but a tsunami was generated that also caused coastal damage and deaths. Event Data:
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