冲绳海槽中段海底灾害地质类型及海底稳定性评价
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摘要
通过分析研究区各类综合调查数据,识别地质灾害类型,编制海底灾害地质图;建立由地震烈度区划指标、海底灾害地质类指标、海底地貌类指标、海底沉积物类型指标组成的评价因素集,建立与评价因素集匹配的评语集。运用模糊信息化及贴近度分析等综合性方法获得评价因子对风险影响程度的隶属度值,以层次分析法确定评价因子间权重值。运用模糊数学原理构建模糊综合评价模型,以6′×6′为网格大小,对冲绳海槽中段及附近海域海底900个评价单元进行模糊综合运算及评价,并绘制了海底稳定性区划图。以期今后为该区资源的开发、防灾减灾等提供基础资料。
Based on all kinds of comprehensive survey data for the middle part of the Okinawa Trough,this study identified the geohazards types,drew up the geohazards map of the seabed,and established the indicator system composing of index of seismic intensity zoning,seabed geohazards and seabed landform and seabed sediment types,and then developed the comment system which is matched with that indicator system.Using the fuzzy information and the approach degree way,we obtained the subjection value of the evaluation factors to the degree of risk,and determined the weighted value of all evaluation indicators by using analytic hierarchy process.Using fuzzy mathematics to establish the fuzzy mathematic model and taking 6′×6′ as grid size,we carried out fuzzy comprehensive operation and evaluation for 900 units in the middle part of Okinawa Trough,and drew up the seabed stability division map.This study provides some important clues for future resource development and disaster prevention and mitigation in the middle part of Okinawa Trough.
Based on all kinds of comprehensive survey data for the middle part of the Okinawa Trough,this study identified the geohazards types,drew up the geohazards map of the seabed,and established the indicator system composing of index of seismic intensity zoning,seabed geohazards and seabed landform and seabed sediment types,and then developed the comment system which is matched with that indicator system.Using the fuzzy information and the approach degree way,we obtained the subjection value of the evaluation factors to the degree of risk,and determined the weighted value of all evaluation indicators by using analytic hierarchy process.Using fuzzy mathematics to establish the fuzzy mathematic model and taking 6′×6′ as grid size,we carried out fuzzy comprehensive operation and evaluation for 900 units in the middle part of Okinawa Trough,and drew up the seabed stability division map.This study provides some important clues for future resource development and disaster prevention and mitigation in the middle part of Okinawa Trough.
引文
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[18]LUAN X W,GAO J Y,LIANG R C,et al.Topography and distribution of central graben in the Miyoko Section of Okinawa Trough[J].Acta Geologica Sinica,2006,80(8):1149-1155.栾锡武,高金耀,梁瑞才,等.冲绳海槽宫古段中央地堑的形态与分布[J].地质学报,2006,80(8):1149-1155.
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[21]LI W R,YANG Z S,WANG Q,et al.Terrigenous transportation through canyon and sedimentation of submarine fan in the Okinawa Trough[J].Oceanologia et Limnologia Sinica,2001,32(4):371-380.李蔚然,杨作生,王琦,等.冲绳海槽陆源碎屑峡谷通道搬运与海底扇沉积[J].海洋与湖沼,2001,32(4):371-380.
[22]DU J,LI P Y,LI P,et al.The seabed stability zonation based on the marine geohazards evaluation in China[J].Haiyang Xuebao,2014,36(5):124-129.杜军,李培英,李萍,等.基于海洋灾害地质评价基础上的我国近海海底稳定性区划[J].海洋学报,2014,36(5):124-129.
[23]YAN M C,WANG G Q,LI B S,et al.Land geoenvironmental regionalization of Guangdong coast by fuzzy mathematics[J].Geography and Territorial Research,2000,16(4):41-49.闫满存,王光谦,李保生,等.基于模糊数学的广东沿海陆地地质环境区划[J].地理与地理信息科学,2000,16(4):41-49.
[24]DU J,LI P Y,WEI W,et al.Stability zoning of hazard geology in coastal zone of China[J].Journal of Natural Disasters,2008,17(4):1-6.杜军,李培英,魏巍,等.中国海岸带灾害地质稳定性区划[J].自然灾害学报,2008,17(4):1-6.
[25]LI P Y,DU J,LIU L J,et al.Geological characteristics and evaluation of coastal hazard in China[M].Beijing:China Ocean Press,2007.李培英,杜军,刘乐军,等.中国海岸带灾害地质特征及评价[M].北京:海洋出版社,2007.
[26]XIE X D,ZHU Z Y,TAN M T,et al.Geological environment and geological disasters in Guangdong coastal area[M].Guangzhou:Guangdong Science and Technology Press,2003.谢先得,朱照宇,覃慕陶,等.广东沿海地质环境与地质灾害[M].广州:广东科技出版社,2003.
[27]CAI H S,ZHOU A G,TANG C H.Expert-analytic hierarchy weighting process in geological environmental quality assessment[J].Earth Science:Journal of China University of Geosciences,1998,23(3):299-302.蔡鹤生,周爱国,唐朝晖.地质环境质量评价中的专家-层次分析定权法[J].地球科学-中国地质大学学报,1998,23(3):299-302.
[2]XU H,CAI Y,SUN H Q,et al.The survey status and geological conditions of accumulation of gas hydrate resource in the East China Sea[J].Journal of Tropical Oceanography,2012,32(4):22-29.许红,蔡瑛,孙和清,等.东海陆坡天然气水合物成藏地质条件和BSR反射及成藏类型特征[J].热带海洋学报,2012,32(4):22-29.
[3]LUAN X W,YUE B J,LU Y T.Seismic characteristics of gas hydrates in the East China Sea[J].Marine Geology&Quaternary Geology,2006,26(5):91-99.栾锡武,岳保静,鲁银涛.东海天然气水合物的地震特征[J].海洋地质与第四纪地质,2006,26(5):91-99.
[4]GONG J M,YANG W D,LU Z Q,et al.Regional geological characteristics of gas hydrates in the East China Sea and possible prospective areas[J].Marine Geology Development,2001,17(7):20-23.龚建明,杨文达,卢振权,等.东海天然气水合物的区域地质特征及可能的远景区[J].海洋地质动态,2001,17(7):20-23.
[5]LUAN X W,CHU F Y,ZHAO Y Y,et al.The possible distribution of hydrate gas in the area of East Sea and its vicinity[J].Acta Sedimentologica Sinica,2001,19(2):315-321.栾锡武,初凤友,赵一阳,等.我国东海及邻近海域气体水合物可能的分布范围[J].沉积学报,2001,19(2):315-321.
[6]MENG X W,LIU B H,SHI X F,et al.Possibility of gas hydrate occurring in the western lower slope of Mid-Okinawa Trough[J].Acta Sedimentologica Sinica,2000,18(4):629-633.孟宪伟,刘保华,石学法,等.冲绳海槽中段西陆坡下缘天然气水合物存在的可能性分析[J].沉积学报,2000,18(4):629-633.
[7]CHEN J W.Formation conditions and resources potential of gas hydrate in the Okinawa Trough of the East China Sea[J].Acta Geoscientica Sinica,2014,35(6):726-732.陈建文.东海冲绳海槽天然气水合物成矿地质条件与资源潜力[J].地球学报,2014,35(6):726-732.
[8]LEE C S,SHOR G G,BIBEE L D,et al.Okinawa Trough:origin as backarc basin[J].Marine Geology,1980,35(1-3):219-241.
[9]GAO J M,LI G S,SUN J S,et al.Geomorphic characteristics of Okinawa Trough[J].Marine Geology&Quaternary Geology,1987,7(1):726-732.高金满,李国胜,孙家淞,等.冲绳海槽的地形地貌特征[J].海洋地质与第四纪地质,1987,7(1):726-732.
[10]LI J B.Regional geology of the East China Sea[M].Qingdao:China Ocean Press,2008.李家彪.东海区域地质[M].青岛:海洋出版社,2008.
[11]HSU S K,SIBUET J C,SHYU C T,et al.Magnetic inversion in the East China Sea and Okinawa Trough:tectonic implications[J].Tectonophysics,2001,333(1-2):111-222.
[12]SIBUTE J,LETOUZEY F,BARBIER F,et al.Back arc extension in the Okinawa Trough[J].Journal of Geophysical Research Atmospheres,1987,92(B13):14041-14063.
[13]SHINJO R.Geochemistry of high Mg andesites and the tectonic evolution of the Okinawa Trough-Ryukyu arc system[J].Chemical Geology,1999,157(1):69-88.
[14]HUH C A,SU C C,WANG C H,et al.Sedimentation in the southern Okinawa Trough-Rates,turbidites and a sediment budget[J].Marine Geology,2006,231(1-4):129-139.
[15]XIANG R,SUN Y B,LI T G,et al.Paleoenvironmental change in the middle Okinawa Trough since the last deglaciation:evidence from the sedimentation rate and planktonic forminferal record[J].Palaeogeography Palaeoclimatology Palaeoecology,2007,243(3-4):378-393.
[16]CHEN D J,LI P Y,LIU L J,et al.The theoretical analysis of the impact of geological disasters on the social and economic development and the countermeasures[J].Ocean Development and Management,2009,26(9):64-71.陈东景,李培英,刘乐军,等.海底地质灾害对社会经济发展影响的理论分析与普适性对策[J].海洋开发与管理,2009,26(9):64-71.
[17]LIU B H,LI X S,ZHAO Y X,et al.Debris transport on the western continental slope of the Okinawa Trough:slumping and gravity flowing[J].Oceanologia et Limnologia Sinica,2005,36(1):1-9.刘保华,李西双,赵月霞,等.冲绳海槽西部陆坡碎屑沉积物的搬运方式:滑塌和重力流[J].海洋与湖沼,2005,36(1):1-9.
[18]LUAN X W,GAO J Y,LIANG R C,et al.Topography and distribution of central graben in the Miyoko Section of Okinawa Trough[J].Acta Geologica Sinica,2006,80(8):1149-1155.栾锡武,高金耀,梁瑞才,等.冲绳海槽宫古段中央地堑的形态与分布[J].地质学报,2006,80(8):1149-1155.
[19]LIU L J.Theory research and practice on East Sea geohazard regionalization in China[D].Qingdao:The Institute of Oceanology,Chinese Academy of Sciences,2004.刘乐军.东海灾害地质分区研究的理论与实践[D].青岛:中国科学院海洋研究所,2004.
[20]DU J,LI P Y,LIU L J,et al.Evaluation study of sea bed stability in the East China sea oil and gas resource area[J].Advance in Marine Science,2004,22(4):480-485.杜军,李培英,刘乐军,等.东海油气资源区海底稳定性评价研究[J].海洋科学进展,2004,22(4):480-485.
[21]LI W R,YANG Z S,WANG Q,et al.Terrigenous transportation through canyon and sedimentation of submarine fan in the Okinawa Trough[J].Oceanologia et Limnologia Sinica,2001,32(4):371-380.李蔚然,杨作生,王琦,等.冲绳海槽陆源碎屑峡谷通道搬运与海底扇沉积[J].海洋与湖沼,2001,32(4):371-380.
[22]DU J,LI P Y,LI P,et al.The seabed stability zonation based on the marine geohazards evaluation in China[J].Haiyang Xuebao,2014,36(5):124-129.杜军,李培英,李萍,等.基于海洋灾害地质评价基础上的我国近海海底稳定性区划[J].海洋学报,2014,36(5):124-129.
[23]YAN M C,WANG G Q,LI B S,et al.Land geoenvironmental regionalization of Guangdong coast by fuzzy mathematics[J].Geography and Territorial Research,2000,16(4):41-49.闫满存,王光谦,李保生,等.基于模糊数学的广东沿海陆地地质环境区划[J].地理与地理信息科学,2000,16(4):41-49.
[24]DU J,LI P Y,WEI W,et al.Stability zoning of hazard geology in coastal zone of China[J].Journal of Natural Disasters,2008,17(4):1-6.杜军,李培英,魏巍,等.中国海岸带灾害地质稳定性区划[J].自然灾害学报,2008,17(4):1-6.
[25]LI P Y,DU J,LIU L J,et al.Geological characteristics and evaluation of coastal hazard in China[M].Beijing:China Ocean Press,2007.李培英,杜军,刘乐军,等.中国海岸带灾害地质特征及评价[M].北京:海洋出版社,2007.
[26]XIE X D,ZHU Z Y,TAN M T,et al.Geological environment and geological disasters in Guangdong coastal area[M].Guangzhou:Guangdong Science and Technology Press,2003.谢先得,朱照宇,覃慕陶,等.广东沿海地质环境与地质灾害[M].广州:广东科技出版社,2003.
[27]CAI H S,ZHOU A G,TANG C H.Expert-analytic hierarchy weighting process in geological environmental quality assessment[J].Earth Science:Journal of China University of Geosciences,1998,23(3):299-302.蔡鹤生,周爱国,唐朝晖.地质环境质量评价中的专家-层次分析定权法[J].地球科学-中国地质大学学报,1998,23(3):299-302.