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- Title
Investigating the Causes of Subsidence (Sinkholes) in South Korea.
- Authors
Onyu Lee
- Abstract
This study aims to analyze sinkholes by applying QGIS, mapping and comparing the occurrences with existing natural patterns to observe the cause of the occurrence and the solution. Sinkholes are topographic depressions that appear when the underlying bedrock weathers down, commonly found in sedimentary bedrock. They typically form due to drastic changes in groundwater levels. In urban areas, sediments may also be flushed out due to leaks in underground water pipes, increasing sinkhole formation. This study collected data on 41 sinkhole incidents in South Korea. The latitude and longitude of each incident were manually obtained and cross-checked. The locations were also classified by region to indicate whether they were considered rural or urban. The data was put into a spreadsheet and mapped using QGIS, and waterways were imported from OpenStreetMap (OSM) data and refined. The resulting map provides spatial insights into the distribution of sinkhole incidents in relation to waterways and sedimentary rocks. Whereas rural sinkholes tend to occur in areas with sedimentary rock as its bedrock material during summer when precipitation levels are high, sinkholes around urban areas are related to many human disturbances. By identifying patterns of sinkhole occurrences, the aim is to predict the formation of sinkholes to prevent catastrophic losses.
- Subjects
SOUTH Korea; SINKHOLES; GEOGRAPHIC information systems; SEDIMENTARY rocks; METEOROLOGICAL precipitation
- Publication
International Journal of High School Research, 2024, Vol 6, Issue 2, p42
- ISSN
2642-1046
- Publication type
Article
- DOI
10.36838/v6i2.8