Pemetaan Lokasi Banjir Rob di Kabupaten Demak Berdasarkan Unggahan Media Sosial Menggunakan Metode Geospatial Intelligence (GEOINT)
Hapsari Pramesti Anggraini, Ir. Heri Sutanta, S.T., M.Sc., Ph.D
2026 | Skripsi | TEKNIK GEODESI
The coastal areas of Demak Regency frequently experience tidal flooding due to a combination of land subsidence, sea level rise, and relatively low coastal topography. The impact of recurring tidal flooding disrupts community activities, damages infrastructure, and changes in coastal environmental conditions over time. Therefore, identifying the location and mapping the distribution of tidal flooding is crucial to understand the characteristics of tidal flooding in coastal areas of Demak Regency. This study analyzes the distribution of tidal flooding in coastal areas of Demak Regency based on data from social media posts on Facebook, TikTok, and X, and news articles containing photos and videos of tidal flooding events. Location identification was conducted through analysis of text, building patterns, road networks, and landmarks, which were then verified using satellite imagery from Google Maps, Google Earth, Google Street View, and field surveys. Furthermore, this study also estimated the height of tidal flooding using reference objects visible in the posts, such as people, vehicles, buildings, and other public facilities. The height estimation was conducted using an inundation level classification approach based on the proportion of objects submerged in water. The results of this study indicate that tidal flooding in the coastal areas of Demak Regency is predominantly distributed in Sayung and Bonang Districts. Fifty tidal flooding points were found in Sayung District and 10 points in Bonang District from 2020 to 2026. Tidal flooding events are often found in coastal residential areas and along the Pantura national road. Estimated tidal flood inundation heights show variations in inundation levels ranging from level 1 to level 6, which are detrimental and dangerous to the community. Therefore, the results of this study indicate that social media upload data can be used as a source of spatial information to identify incident locations and estimate tidal flood inundation heights to support the mapping and monitoring of tidal flood-affected areas in Demak Regency.
Kata Kunci : banjir rob, penurunan muka tanah, media sosial, Kabupaten Demak, estimasi tinggi genangan