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首页> 外文期刊>Remote Sensing >Long Term Subsidence Analysis and Soil Fracturing Zonation Based on InSAR Time Series Modelling in Northern Zona Metropolitana del Valle de Mexico
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Long Term Subsidence Analysis and Soil Fracturing Zonation Based on InSAR Time Series Modelling in Northern Zona Metropolitana del Valle de Mexico

机译：基于InSAR时间序列模型的墨西哥北部Zona大都市的长期沉降分析和土壤压裂分区

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In this study deformation processes in northern Zona Metropolitana del Valle de Mexico (ZMVM) are evaluated by means of advanced multi-temporal interferometry. ERS and ENVISAT time series, covering approximately an 11-year period (between 1999 and 2010), were produced showing mainly linear subsidence behaviour for almost the entire area under study, but increasing rates that reach up to 285 mm/yr. Important non-linear deformation was identified in certain areas, presumably suggesting interaction between subsidence and other processes. Thus, a methodology for identification of probable fracturing zones based on discrimination and modelling of the non-linear (quadratic function) component is presented. This component was mapped and temporal subsidence evolution profiles were constructed across areas where notable acceleration (maximum of 8 mm/yr2) or deceleration (maximum of −9 mm/yr2) is found. This methodology enables location of potential soil fractures that could impact relevant infrastructure such as the Tunel Emisor Oriente (TEO) (along the structure rates exceed 200 mm/yr). Additionally, subsidence behaviour during wet and dry seasons is tackled in partially urbanized areas. This paper provides useful information for geological risk assessment in the area.
机译：在这项研究中，通过先进的多时相干涉法评估了墨西哥北部Zona大都会区（ZMVM）的变形过程。 ERS和ENVISAT时间序列涵盖了大约11年的时间段（从1999年到2010年），几乎在整个研究区域内都显示出线性的沉降行为，但增长率高达285毫米/年。在某些区域发现了重要的非线性变形，推测表明沉降与其他过程之间存在相互作用。因此，提出了一种基于非线性（二次函数）分量的判别和建模来识别可能压裂区域的方法。对该分量进行了映射，并在明显加速（最大8 mm / yr 2 ）或减速（最大-9 mm / yr 2 ）的区域上构造了时间沉降演化曲线。 ）。这种方法可以确定可能影响相关基础设施（如Tunel Emisor Oriente（TEO））的潜在土壤裂缝（沿结构速率超过200毫米/年）。此外，在部分城市化地区解决了湿季和干季的沉降行为。本文为该地区的地质风险评估提供了有用的信息。

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