發(fā)布時間：2018-05-15 02:16

  本文選題：無人機攝影測量技術 + 沖積扇地貌　； 參考：《地震地質(zhì)》2017年04期

【摘要】：由于自然改造的持續(xù),地貌形態(tài)復雜,判斷發(fā)育過程中的沖積扇是否經(jīng)歷過構(gòu)造作用,一直是活動構(gòu)造研究中的難點之一。近年來發(fā)展起來的無人機航空攝影測量技術在構(gòu)造地貌數(shù)據(jù)采集方面有著突出的優(yōu)勢。文中結(jié)合野外調(diào)查和探槽等相關工作,利用無人機航空攝影測量技術對新疆巴里坤盆地南緣斷裂上一處復雜的沖積扇面進行了高精度的DEM和DOM數(shù)據(jù)采集。針對正在發(fā)育的復雜沖積扇面,在對DEM進行地形解析和圖像處理的基礎上,采取了對扇面進行次級分區(qū)、逐個研究、相互佐證的方法,通過在次級分區(qū)內(nèi)建立剖面集進行單獨分析和鄰近分區(qū)對比分析,明確了沖積扇面發(fā)育過程中經(jīng)歷的構(gòu)造作用和2.5m的垂直變形量,顯示該技術方法是識別復雜沖積扇殘存構(gòu)造信息并提取相關活動構(gòu)造參數(shù)的有效手段。
[Abstract]:Because of the continuous transformation of nature and the complexity of geomorphology, it is one of the difficulties in the study of active tectonics to judge whether the alluvial fan has experienced tectonic action in the course of development. The aerial photogrammetry technology of UAV developed in recent years has a prominent advantage in the acquisition of structural geomorphological data. Combined with field investigation and grooving, the DEM and DOM data of a complex alluvial fan surface on the southern margin of the Balikun basin in Xinjiang are collected by using the aerial photogrammetry technique of unmanned aerial vehicle (UAV). On the basis of terrain analysis and image processing of DEM, the method of subdivision of fan surface, one by one, and mutual corroboration is adopted in view of the complex alluvial fan surface that is developing, and on the basis of terrain analysis and image processing of DEM, The tectonic action and the vertical deformation of 2.5 m during the development of the alluvial fan surface are determined by establishing the profile set in the secondary subzone for separate analysis and the comparative analysis of the adjacent zones. It shows that this method is an effective method to identify the residual structure information of complex alluvial fan and to extract the relevant active structural parameters.
【作者單位】： 中國地震局地質(zhì)研究所;陜西省地震局;四川省地震局;
【基金】：財政部重點項目“全國地震重點監(jiān)視防御區(qū)活動斷層地震危險性評價”(1521044025)資助
【分類號】：P231;P315

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