How do disasters disrupt the spatial growth of informal settlements? A multi-temporal remote sensing approach - The case study of Mocoa, Colombia

被引：0

作者：

Camacho, Ricardo ^{[1
,2
]}

Aryal, Jagannath ^{[1
]}

Rajabifard, Abbas ^{[2
]}

机构：

[1] Univ Melbourne, Ctr Spatial Data Infrastruct & Land Adm CSDILA, Earth Observat & AI Res Grp, Melbourne, Australia

[2] Univ Melbourne, Ctr Spatial Data Infrastruct & Land Adm CSDILA, Level 6,Melbourne Connect,700 Swanston St, Melbourne, Vic 3010, Australia

来源：

HABITAT INTERNATIONAL | 2025年 / 156卷

关键词：

informal settlements; Growth patterns; Urban sprawl; Earth observation;

D O I：

10.1016/j.habitatint.2024.103272

中图分类号：

F0 [经济学]; F1 [世界各国经济概况、经济史、经济地理]; C [社会科学总论];

学科分类号：

0201 ; 020105 ; 03 ; 0303 ;

摘要：

Informal settlements are a growing phenomenon, particularly in the Global South, where disaster risk is also high. This research investigates how disasters can disrupt the growth patterns of multiple informal settlements within a city, focusing on the 2017 Mocoa disaster in Colombia. We propose a novel spatiotemporal framework combining data and models such as historical aerial photographs, RapidEye, PlanetScope multi-temporal images, and deep learning pixel classification models. The framework is translated into a dedicated approach that compares the urban and peri-urban dynamics of twelve informal settlements in the city of Mocoa over 14 years, considering its limited data availability, typical of smaller cities in the Global South. Our analysis reveals that the 2017 disaster significantly altered Mocoa's sprawl pattern and the growth trajectory of specific informal settlements. This study contributes to a replicable methodology in understanding the impact of disasters on informal urbanisation, highlighting the need for disaster risk reduction strategies that consider the vulnerabilities of IS in smaller cities.

引用

页数：13