地理信息技术在1781年亚平宁山脉北部马尔凯地区(monte nerone district)地震深度测定中的应用

S. Vyzhva, V. Zatserkovnyi, I. Zobniv, M. De Donatis, I. Tsiupa
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The main local tectonic structure is an anticlinorium, oriented in NW-SW, corresponding to the regional Apennine depression, with a longitudinal extension of about 30 km and a wavelength of 5–6 km. The work on sounding the Monte Nerone main fault was developed in several stages: project preparation, terrain surveying, data processing and synthesis. The project included a CTR of the Marche region, a geodetic reference map based on the international ellipsoid centered on Monte Mario (Rome 1940), a geological map at a scale of 1:10 000 and satellite orthophoto plans of the reference areas. Reference layers were created in the work in the form of a shape file to be able to catalog and share the information obtained in the field. These layers included: metadata, data containing measurements, annotation. 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With the help of the measurements carried out, it was possible to put forward the hypothesis that the Monte Nero fault extends from the west, starting from La Valle, crossing the western, southern and eastern slopes of Monte Nerone and extending to Monte La Montagnola, continuing to Pietralunga on its entire along the length of about 9.9 km. In addition, having the CTR with the geological map, we were able to confirm certain geological deposits. A 3D terrain model was created in ArcScene software to fully account for the terrain situation. The topography of the area was modeled in relation to the geological situation, the fault was marked, and the collected data were interpreted. 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引用次数: 0

摘要

在这项工作中,研究了Monte Nerone背斜(Marche - north Apennines)的主要断层,以及断层的研究、识别和固定:Monte Nerone地区的正断层系统,以及Monte Nerone断层与1781年Marche Apennines地震的相关性。根据地壳地震剖面,解释了一条大变形构造中倾斜小角度的小角度东正断层。因此,在这个构造活动区记录的地震事件可能与这个断层有关,例如,最近在翁布里亚-三月纪亚平宁山脉南部地区发生的地震事件。本区主要构造构造为背斜构造,向北西-西南方向,与区域亚平宁坳陷相对应,纵向延伸约30 km,波长5 ~ 6 km。Monte Nerone主断层测深工作分几个阶段进行:项目准备、地形测量、数据处理和综合。该项目包括马尔凯地区的CTR、以蒙特马里奥为中心的国际椭球体(1940年罗马)为基础的大地测量参考地图、1:10 000比尺的地质图和参考地区的卫星正射影像图。在工作中以形状文件的形式创建参考层,以便能够对现场获得的信息进行编目和共享。这些层包括:元数据、包含度量的数据、注释。在实地工作期间,规划了一条路线和站点,在那里进行了更详细的测量,并发挥了里程碑的作用,用于检查先前获得的数据,以证实或反驳假设。在该路线中,选择了9个主要站点,在这些站点进行了领土侦察,确定了地层的地质特征,测量和记录了主要断层,其方向,倾斜和伸展角度,坡度。所有的测量都记录在软件环境和先前创建的数据库中。使用连接到平板电脑的蓝牙GPS,可以精确跟踪测量的位置。在测量的帮助下,有可能提出这样的假设,即蒙特尼罗断层从西延伸,从拉山谷开始,穿过蒙特尼罗的西部、南部和东部斜坡,延伸到蒙特拉蒙塔尼奥拉,沿着大约9.9公里的长度一直延伸到彼得拉伦加。此外,有了CTR和地质图,我们能够确认某些地质沉积物。在ArcScene软件中创建三维地形模型,充分考虑地形情况。根据地质情况对该地区的地形进行了建模,对断层进行了标记,并对收集到的数据进行了解释。考虑到我们沿着路线测量到的54°倾斜,90°倾斜的岩石,可以假设地震是浅的,最大深度约为10公里。
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APPLICATION OF GEO-INFORMATION TECHNOLOGIES IN DETERMINING THE DEPTH OF EARTHQUAKE IN THE MONTE NERONE DISTRICT (MARCHE DISTRICT, NOTHERN APENNINES IN 1781)
In the work, the main fault of the Monte Nerone anticline (Marche – Northern Apennines) was investigated, as well as the study, identification and fixation of faults: the normal fault system in the Monte Nerone area and the search for correlations on the ground of the Monte Nerone fault with the earthquake in the Marche Apennines in 1781. A small-angle eastern normal fault dipping at a small angle in the structure of extensive deformations was interpreted, it was based on the seismic profiles of the crust. Therefore, seismic events registered in this tectonically active zone can be related to this fault, as, for example, recent events in the area of the southern UmbrianMarchean Apennines. The main local tectonic structure is an anticlinorium, oriented in NW-SW, corresponding to the regional Apennine depression, with a longitudinal extension of about 30 km and a wavelength of 5–6 km. The work on sounding the Monte Nerone main fault was developed in several stages: project preparation, terrain surveying, data processing and synthesis. The project included a CTR of the Marche region, a geodetic reference map based on the international ellipsoid centered on Monte Mario (Rome 1940), a geological map at a scale of 1:10 000 and satellite orthophoto plans of the reference areas. Reference layers were created in the work in the form of a shape file to be able to catalog and share the information obtained in the field. These layers included: metadata, data containing measurements, annotation. During the fieldwork, a route and stops were planned where more detailed measurements were made and played the role of landmarks for checking with previously obtained data to confirm or refute the hypothesis. In the route, nine main stops were selected, where reconnaissance of the territory was carried out, geological characteristics of the formation were determined, measurements and recording of the main fault, its direction, angles of dip and extension, slope were carried out. All measurements were recorded in the software environment and previously created database. Using a Bluetooth GPS connected to a tablet PC, accurate tracking of the position where the measurements were made was obtained. With the help of the measurements carried out, it was possible to put forward the hypothesis that the Monte Nero fault extends from the west, starting from La Valle, crossing the western, southern and eastern slopes of Monte Nerone and extending to Monte La Montagnola, continuing to Pietralunga on its entire along the length of about 9.9 km. In addition, having the CTR with the geological map, we were able to confirm certain geological deposits. A 3D terrain model was created in ArcScene software to fully account for the terrain situation. The topography of the area was modeled in relation to the geological situation, the fault was marked, and the collected data were interpreted. Given the 54° dip, 90° inclination of the rocks we measured along the route, it can be assumed that the earthquake was shallow, with a maximum depth of about 10 km.
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