Büyük Depremlerle İlişkili Öncül Kabuk Hareketleri

Makalenin İngilizce İsmi: 
Precursory crustal movements associated with major earthquakes
Makale İçerik Bilgileri
Makale Dili: 
Türkçe
Türkçe Özet: 

Büyük depremler öncesi anormal kabuk hareketlerinin var olduğu bilinmektedir. Japonyadaki Kanto
(1930; M=6.9), Niigatc (1964; M=7.0), tzo-Oshima (1978, M=6.8), Cindeki Tangshan (1976, M=7,8),
Haicheng (1976; M=8) ve Songpan (1976; M=7.2) depremleri öncesi görülen kabuk hareketleri bunların
güzel örneklerinden birkaçıdır. Benzer hareketler Güney Kalifomiyada da gözlenmiştir.
Deneysel çalışmalar, kayaların defo.rma.syoo etkisiyle elastik ve elastik olmayan hacim büyümesine
maruz kaldıklarını göstermiştir. Sismik bölgelerde gözlenen gravite azalması, kaynak, su boşalımları ve
.radon gazı kaçaklan:nd,aki artışlarda kayaların bir tür hacim büyümesine uğradıklarını göstermektedir. Bu.
nedenle öncül kabuk hareketleri kayalardaki hacim, büyümesinin yüzeysel ifadesi olarak değerlendirilebilirler

İngilizce Özet: 

A history of anomolous crustal motion precedes major earthquakes. Grustal movements prior
to the Kanto (1930; M = 6.9), Nigate (1964; M = 7.0) and Izu-Oshima (1978; M = 6.8) earthquakes in Japan
and the Tangshan (1.976; M = 7.8), Haicheng (1976; M = 8.0) and Songpan (1976; M = 7.2) erathquak.es in
China are only a few examples. Similar movements have also been reported in Southern California.
Experimental studies suggest rock deformation under simulated crustal conditions produces a combination
of elastic and inelastic volume dilatancy. Field evidence for gravity decrease, water expulsion and radon
emission in seismic regions suggests a mode- of volume dilatancy occur during precursory stages of major
earthquakes. Preseismic cmstal movements can therefore be interpreted as surficial expressions of
volume dilatancy at subcrustal levels in a 'slip-deficient seismic zone..

Yazar Bilgileri
1. Yazar
Yazar Adı: 
Hayrettin KORAL
Yazar Üniversitesi: 
İstanbul Üniversitesi
Yazar Fakültesi: 
Mühendislik Fakültesi
Yazar Anabilim Dalı: 
Jeoloji Mühendisliği
Makale Künye Bilgisi
Makalenin Yayımlandığı Dergi: 
Jeoloji Mühendisliği Dergisi
Makale Yayın Yılı: 
1992
Cilt/Sayı: 
41
Sayfa Aralığı: 
109-117
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