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首页> 外文期刊>Earth and Planetary Science Letters: A Letter Journal Devoted to the Development in Time of the Earth and Planetary System >Gas emissions and active tectonics within the submerged section of the North Anatolian Fault zone in the Sea of Marmara
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Gas emissions and active tectonics within the submerged section of the North Anatolian Fault zone in the Sea of Marmara

机译:马尔马拉海北安纳托利亚断层带淹没区内的气体排放和活跃构造

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摘要

The submerged section of the North Anatolian fault within the Marmara Sea was investigated using acoustic techniques and submersible dives. Most gas emissions in the water column were found near the surface expression of known active faults. Gas emissions are unevenly distributed. The linear fault segment crossing the Central High and forming a seismic gap - as it has not ruptured since 1766, based on historical seismicity [Ambraseys, N.N., & Jackson, J.A., (2000), Seismicity of the Sea of Marmara (Turkey) since 1500, Geophys. J. Int., 141, (3), F1-F6. (doi:10.1046/j.1365-246x.2000.00137.x: Ambraseys, N., (2002), The seismic activity of the Marmara Region over the last 2000 years, Bull. Seism. Soc. Am., 92, 1-18; Parson, T., (2004), Recalculated probability of M >= 7 earthquakes beneath the Sea of Marmara, Turkey,J. Geophys. Res., 109, B05304, doi: 10.1029/2003JB002667: Pondard, N., Armijo, R., King, G.C.P., Meyer, B., Flerit, F, (2007), Fault interactions in the Sea of Marmara pull-apart (North Anatolian Fault): earthquake clustering and propagating earthquake sequences, Geophys. J. hit., 171, 1185-1197, doi: 10;1111/j.1365-246X.2007.03580.x] -, exhibits relatively less gas emissions than the adjacent segments. In the eastern Sea of Marmara, active gas emissions are also found above a buried transtensional fault zone [Carton, H., Singh, S.C., Hirn, A., Bazin, S., de Voogd, B., Vigner, A., Ricolleau, A., Cetin, S., Ocakoglu, N., Karakoc, F. and Sevilgen, V., (2007), Seismic imaging of the three-dimensional architecture of the Cmarcik Basin along the North Anatolian Fault,J. Geophys. Res., 180, B06101, doi:10.1029/2006JB004548; Okay, A.I., Kashlar-Ozcan, A., Imren, C., Boztepe-Guney, A., Demirbag, E., and Kuscu, I., (2000). Active faults and evolving strike-slip basins in the Sea of Marmara, northwest Turkey: a multichannel seismic reflection study, Tectonophysics, 321,189-218], which displayed micro-seismic activity after the 1999 events [Ozalabey, S., Ergin, M., Aktar, M., Tapirdamaz, C., Bicmen, F., Yoruk, A., (2002), The 1999 Izmit Earthquake Sequence in Turkey: seismological and tectonic aspects, Bull. Seism. Soc. Am., 92,376-386; Karabulut, H., Bouin, M.P., Bouchon, M., Dietrich, M., Cornou, C., Aktar, M., (2002), The seismicity in the Eastern Marmara Sea after the 17 August 1999 Izmit earthquake, Bull. Seismol. Soc. Am., 92, 387-393]. Remarkably, this zone of gas emission extends westward all along the southern edge of Cinarcik basin, well beyond the zone where 1999 aftershocks were observed. The long term monitoring of gas seeps could hence be highly valuable for the understanding of the evolution of the fluid-fault coupling processes during the earthquake cycle within the Marmara Sea.
机译:使用声学技术和潜水装置对马尔马拉海北安那托利亚断层的水下部分进行了调查。在水柱中发现的大多数气体是在已知活动断层的表层附近发现的。气体排放分布不均。线性断层段穿过中高地并形成地震缝隙-自1766年以来就没有破裂,基于历史地震活动性[Ambraseys,NN,and Jackson,JA,(2000),Marmara Sea Seismicity of Marmara(Turkey) 1500年,地球物理。 J.Int。,141,(3),F1-F6。 (doi:10.1046 / j.1365-246x.2000.00137.x:Ambraseys,N。,(2002年),马尔马拉地区过去2000年的地震活动,Bull。Seism.Soc.Am。,92,1- 18; Parson,T。,(2004年),重新计算了土耳其马尔马拉海下方M> = 7地震的概率,J。Geophys。Res。,109,B05304,doi:10.1029 / 2003JB002667:Pondard,N.,Armijo ,R.,King,GCP,Meyer,B.,Flerit,F,(2007年),马尔马拉海断裂带相互作用(北安纳托利亚断层):地震聚类和传播地震序列,Geophys.J。 ,171,1185-1197,doi:10; 1111 / j.1365-246X.2007.03580.x]-的气体排放量要比相邻区域少。在马尔马拉东海,活性气体的排放量也高于埋藏的张性断裂带[Carton,H.,Singh,SC,Hirn,A.,Bazin,S.,de Voogd,B.,Vigner,A.,Ricolleau,A.,Cetin,S.,Ocakoglu,N. Karakoc,F。和Sevilgen,V。,(2007年),Cmarcik三维结构的地震成像北安纳托利亚断层盆地,J。地理学。 Res。,180,B06101,doi:10.1029 / 2006JB004548;好的,A.I.,Kashlar-Ozcan,A.,Imren,C.,Boztepe-Guney,A.,Demirbag,E.和Kuscu,I.(2000年)。土耳其西北部马尔马拉海的活动断层和不断演化的走滑盆地:多通道地震反射研究,构造物理学,321,189-218],该研究显示了1999年事件后的微地震活动[Ozalabey,S.,Ergin,M.]。 ,Aktar,M.,Tapirdamaz,C.,Bicmen,F.,Yoruk,A。,(2002年),《 1999年土耳其伊兹密特地震序列:地震学和构造学》,Bull。地震Soc。美国,92,376-386; Karabulut,H.,Bouin,M.P.,Bouchon,M.,Dietrich,M.,Cornou,C.,Aktar,M。,(2002年),1999年8月17日伊兹密特地震后马尔马拉海东部的地震,Bull。地震Soc。 Am。,92,387-393]。值得注意的是,该气体排放区一直沿着西纳尔西克盆地的南端向西延伸,远远超出了观察到1999年余震的区域。因此,对于了解马尔马拉海地震周期中流体-断层耦合过程的演变,对气体渗漏的长期监测可能非常有价值。

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