Time Series Visualization (TSV) of Earthquakes in The Cilacap and Surrounding Earthquake Active Zone using QGIS And USGS Data Set

Ninik Agustin; Nani Kurniasih

Authors

Ninik Agustin Universitas Nahdlatul Ulama Al Ghazali Cilacap
Nani Kurniasih

Keywords:

Earthquake, QGIS, Time Series Visualization

Abstract

Earthquakes in Cilacap often occur with a strength above 5 SR or with a smaller strength. This condition means that earthquake research in the Cilacap area will always be needed. This study aims to display a visualization of the time series of earthquakes in the Cilacap area using QGIS and the USGS dataset. The data set used is the earthquake data set around the Cilacap area from USGS with a time span from 1918 to 2021. The data boundaries of this study are Latitude 7.324˚, Longitude 107.941˚, and Latitude -10.407˚, Longitude 111.116˚. The results of spatial data visualization using the heatmap technique are then analyzed temporally using the Temporal function in the QGIS software. The results of the temporal analysis with frames per year produce 104 frames. Visualization of earthquake data in a time series can show changes in the pattern of earthquake magnitude density and show changes in the geographical location of earthquake points from year to year.

Downloads

Download data is not yet available.

References

Edison, R. et al. (2021) ‘Seismic Vulnerability Index Calculation for Mitigation Purposes at Cilacap District’, IOP Conference Series: Earth and Environmental Science, 873(1). doi: 10.1088/1755-1315/873/1/012005.

Flenniken, J. M., Stuglik, S. and Iannone, B. V. (2020) ‘Quantum GIS (QGIS): An introduction to a free alternative to more costly GIS platforms’, Edis, 2020(2), p. 7. doi: 10.32473/edis-fr428-2020.

Liu, D. et al. (2019) ‘Heat map visualisation of fire incidents based on transformed sigmoid risk model’, Fire Safety Journal, 109(January), p. 102863. doi: 10.1016/j.firesaf.2019.102863.

Muhaimin, M., Tjahjono, B. and Darmawan, D. (2016) ‘Analisis Risiko Gempabumi Di Cilacap Provinsi Jawa Tengah’, Jurnal Ilmu Tanah dan Lingkungan, 18(1), p. 28. doi: 10.29244/jitl.18.1.28-34.

Pranita, E. (2022) ‘BMKG: Waspada Ancaman Gempa Bumi dan Tsunami di Sepanjang Selatan Jawa’, Kompas, 28 July. Available at: https://www.kompas.com/sains/read/2022/07/28/133100823/bmkg--waspada-ancaman-gempa-bumi-dan-tsunami-di-sepanjang-selatan-jawa?page=all.

Wachidah, S. F. and Agustin, N. (2021) ‘Analisa Kerentanan Tanah di Kecamatan Adipala Kabupaten Cilacap Mengggunakan Metode Mikrotremor Sebagai Upaya Mitigasi Bencana Gempa Bumi’, 24(1), pp. 1–9.