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A semi-quantitative landslide risk assessment of central Kahramanmaraş City in the Eastern Mediterranean region of Turkey
Arabian Journal of Geosciences ( IF 1.827 ) Pub Date : 2020-07-25 , DOI: 10.1007/s12517-020-05697-w
Çiğdem Tetik Biçer , Murat Ercanoglu

Landslides are one of the most destructive natural hazards in Turkey. In addition to loss of lives, there were many negative impacts of landslides on properties and the environment. To minimize the losses and damages related to landslides, a series of labour-intensive studies starting from landslide inventory to landslide risk mapping is required. Thus, this study aims to assess the landslide risk by a semi-quantitative approach in a landslide-prone area located in the Eastern Mediterranean region of Turkey. This region has been suffering from landslides with its high population and industrial characteristics. A total of 215 deep-seated rotational earth slides were mapped during field studies. Then, landslide-susceptibility mapping was performed by frequency ratio and logistic regression methods. For the hazard stage, the susceptibility map and the triggering indicator maps were used to produce a Landslide Hazard Index (LHI) map. As for the vulnerability analysis, a relative evaluation was performed by considering land use, infrastructure and population density data. All maps were combined at the final stage to produce a Landslide Risk Index (LRI) map of the study area. It was revealed that areal coverages of the produced LRI map were 21.4% very low (VL), 10.8% as low (L), 37.4% as medium (M), 24.8% as high (H) and 5.6% as very high (VH) LRI, respectively. The so-produced LRI map would be beneficial for further and detailed risk analyses to be performed in the future since it highlights the landslide risk hotspots in a regional scale.

中文翻译:

土耳其东部地中海地区Kahramanmaraş市中心的半定量滑坡风险评估

滑坡是土耳其最具破坏性的自然灾害之一。除了丧命之外,滑坡还对财产和环境产生了许多负面影响。为了最大程度地减少与滑坡有关的损失和损害,需要进行一系列从滑坡清单到滑坡风险制图的劳动密集型研究。因此,本研究旨在通过半定量方法评估位于土耳其东部地中海地区滑坡易发地区的滑坡风险。该地区因人口众多和工业特点而遭受滑坡的困扰。在野外研究期间,共绘制了215张深层旋转地球滑坡。然后,通过频率比和对数回归方法进行滑坡敏感性测绘。在危险阶段 磁化率图和触发指标图被用于生成滑坡危险指数(LHI)图。关于脆弱性分析,通过考虑土地使用,基础设施和人口密度数据进行了相对评估。在最后阶段将所有地图组合在一起,以生成研究区域的滑坡风险指数(LRI)地图。结果表明,生成的LRI图的区域覆盖率是:极低(VL)为21.4%,低(L)为10.8%,中(M)为37.4%,高(H)为24.8%和极高为5.6%( VH)LRI。如此生成的LRI地图将有助于将来进行进一步和详细的风险分析,因为它突出了区域范围内的滑坡风险热点。通过考虑土地使用,基础设施和人口密度数据进行了相对评估。在最后阶段将所有地图组合在一起,以生成研究区域的滑坡风险指数(LRI)地图。结果表明,生成的LRI图的区域覆盖率是:极低(VL)为21.4%,低(L)为10.8%,中(M)为37.4%,高(H)为24.8%和极高为5.6%( VH)LRI。如此生成的LRI地图将有助于将来进行进一步和详细的风险分析,因为它突出了区域范围内的滑坡风险热点。通过考虑土地使用,基础设施和人口密度数据进行了相对评估。在最后阶段将所有地图组合在一起,以生成研究区域的滑坡风险指数(LRI)地图。结果表明,生成的LRI图的区域覆盖率是:极低(VL)为21.4%,低(L)为10.8%,中(M)为37.4%,高(H)为24.8%和极高为5.6%( VH)LRI。如此生成的LRI地图将有助于将来进行进一步和详细的风险分析,因为它突出了区域范围内的滑坡风险热点。极低(VL)的4%,低(L)的10.8%,中(M)的37.4%,高(H)的24.8%和极高(VH)的LRI分别为5.6%和6%。如此生成的LRI地图将有助于将来进行进一步和详细的风险分析,因为它突出了区域范围内的滑坡风险热点。极低(VL)的4%,低(L)的10.8%,中(M)的37.4%,高(H)的24.8%和极高(VH)的LRI分别为5.6%和6%。如此生成的LRI地图将有助于将来进行进一步和详细的风险分析,因为它突出了区域范围内的滑坡风险热点。
更新日期:2020-07-25
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