CAJ | 학술논문

利用2～7 kHz 浅地层剖面探测、多波束、单波束水深数据以及侧扫声纳勘测影像等地质地球物理实测数据，分析研究了河北南堡-曹妃甸海域各种潜在的地质灾害类型，编制了该海域的灾害地质图与海底地貌图。并在前人对海岸带灾害地质类型分类的基础上，对该海域的潜在的灾害地质类型进行了分类。对海底浅层气、活动沙波、海底侵蚀、活动断裂、埋藏斜层、陡坡、陡坎以及沟槽等与近海海洋工程密切相关的灾害类型的空间分布特征深入研究。研究结果显示：调查区海域的潜在地质灾害因素分布较为集中，多发育在缓斜的水下侵蚀堆积岸坡与陡斜的水下侵蚀岸坡分界线附近，浅层气，陡坡陡坎以及沟槽都有发育；在陆架侵蚀洼地区，发育有较大规模的沟槽，海底侵蚀现象也是较为普遍；调查区其他海域，灾害类型较少，局部发育有活动沙波和埋藏斜层等。
이용2～7 kHz 천지층부면탐측、다파속、단파속수심수거이급측소성납감측영상등지질지구물리실측수거，분석연구료하북남보-조비전해역각충잠재적지질재해류형，편제료해해역적재해지질도여해저지모도。병재전인대해안대재해지질류형분류적기출상，대해해역적잠재적재해지질류형진행료분류。대해저천층기、활동사파、해저침식、활동단렬、매장사층、두파、두감이급구조등여근해해양공정밀절상관적재해류형적공간분포특정심입연구。연구결과현시：조사구해역적잠재지질재해인소분포교위집중，다발육재완사적수하침식퇴적안파여두사적수하침식안파분계선부근，천층기，두파두감이급구조도유발육；재륙가침식와지구，발육유교대규모적구조，해저침식현상야시교위보편；조사구기타해역，재해류형교소，국부발육유활동사파화매장사층등。
Based on the geological and geophysical data,including shallow stratigraphic profiles,multibeam and sin-gle-beam bathymetric data,and sidescan sonar photographs,the potential geohazards in the sea area near Nanpu-Ca-ofeidian,Hebei Province were analysed and classified,the geohazard map and geomorphologic map of the study area are compiled,and studied the spatial distribution characteristics of the geohazards which are closely related to ma-rine engineering,such as shallow gas,active sand waves,seafloor erosion,active fault,buried cross-bedded sand lay-ers,steep slopes,steep scarps and grooves,are examined.The shallow gas,steep slopes and scarps are usually de-veloped near the boundary between the gentle erosive-accumulative nearshore slope and steep erosive nearshore slope.Large-scales grooves and seafloor erosion are usually distributed in erosive shelf depression.In the other parts of the study area,geohazard types are less discovered,while active sand waves and buried cross-bedded sand layers are local found in the shelf area.