{"title":"Assessment of Initial Seismicity for Offshore Platforms: a Case Study of the Pechora Sea","authors":"S. A. Kovachev, N. V. Libina","doi":"10.1134/s0001437024010065","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Seismotectonic and seismoacoustic studies carried out during an expedition onboard the R/V <i>Akademik Boris Petrov</i> in the Pechora Sea revealed a paleoseismic dislocation confined to a fault zone tracing the North Ural seismic lineament. The amplitude of this dislocation (the relative displacement of its sides) makes it possible to estimate the magnitude of the paleoearthquake that occurred within the North Ural lineament. This magnitude was used to estimate the maximum seismic impacts on offshore oil and gas facilities already in operation and those being designed for construction in the northeastern Pechora Sea. These estimates differ significantly from estimates made previously. The method of searching for paleoseismic dislocations using seismoacoustic methods, as well as lineament analysis, can be used for initial assessment seismic impacts in water areas, including the Laptev Sea, as the most seismically active region of the Arctic.</p>","PeriodicalId":54692,"journal":{"name":"Oceanology","volume":"18 1","pages":""},"PeriodicalIF":1.3000,"publicationDate":"2024-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Oceanology","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.1134/s0001437024010065","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"OCEANOGRAPHY","Score":null,"Total":0}
引用次数: 0
Abstract
Seismotectonic and seismoacoustic studies carried out during an expedition onboard the R/V Akademik Boris Petrov in the Pechora Sea revealed a paleoseismic dislocation confined to a fault zone tracing the North Ural seismic lineament. The amplitude of this dislocation (the relative displacement of its sides) makes it possible to estimate the magnitude of the paleoearthquake that occurred within the North Ural lineament. This magnitude was used to estimate the maximum seismic impacts on offshore oil and gas facilities already in operation and those being designed for construction in the northeastern Pechora Sea. These estimates differ significantly from estimates made previously. The method of searching for paleoseismic dislocations using seismoacoustic methods, as well as lineament analysis, can be used for initial assessment seismic impacts in water areas, including the Laptev Sea, as the most seismically active region of the Arctic.
AbstractSeismotectonic and seismoacoustic studies conducted during an expedition on the R/V Akademik Boris Petrov in the Pechora Sea revealed a paleosemic dislocation confined to a fault zone tracing the North Ural seismic lineament.根据这一错位的振幅（其两侧的相对位移），可以估算出在北乌拉尔地震带内发生的古地震的震级。这个震级被用来估算地震对佩乔拉海东北部已经运行和正在设计建造的海上石油和天然气设施的最大影响。这些估算结果与之前的估算结果大相径庭。利用地震声学方法寻找古地震错位的方法以及线状分析，可用于初步评估水域的地震影响，包括拉普捷夫海这个北极地震最活跃的地区。
期刊介绍：
Oceanology, founded in 1961, is the leading journal in all areas of the marine sciences. It publishes original papers in all fields of theoretical and experimental research in physical, chemical, biological, geological, and technical oceanology. The journal also offers reviews and information about conferences, symposia, cruises, and other events of interest to the oceanographic community.
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