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Kota adm. jakarta timur,
Dki jakarta
INDONESIA
Spatial : Wahana Komunikasi dan Informasi Geografi
Published by Universitas Negeri Jakarta
ISSN : 16931408     EISSN : 25809830     DOI : -
Core Subject : Science,
Earth & Planetary Sciences
Jurnal SPATIAL Wahana Komunikasi dan Informasi terbit dua kali dalam setahun, bulan Maret dan September.
Arjuna Subject : -
Articles 142 Documents
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Pengaruh Peningkatan Lahan Terbangun Terhadap Penurunan Permukaan Tanah Di Kota Jakarta Utara Tahun 2014-2022 Muhammad Ihsan Syahidan; Andri Noor Ardiansyah Andri; Syairul Bahar
Jurnal Spatial Wahana Komunikasi dan Informasi Geografi Vol 23 No 2 (2023): Spatial : Wahana Komunikasi dan Informasi Geografi
Publisher : Department Geography Education Faculty of Social Science - Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/spatial.232.07

Abstract

This study aims to determine the effect of increased built-up land on land subsidence in North Jakarta City in 2014-2022. This research uses a quantitative approach and descriptive research type. This research uses remote sensing and geographic information system (GIS) processing techniques using Landsat 8 and Sentinel 1 image data in 2014 and 2022, processing is done through the Google Earth Engine platform. In the variable increase in built-up land, the analysis was carried out using the supervised classification method into 2 classifications, namely built-up land and non-built-up land. And to get the value of land subsidence, DInSAR (Different Interferometric Synthetic Aperture Radar) analysis was conducted. Then to determine the value of the influence between the variable increase in built-up land (x) and the variable land subsidence (y), a simple linear regression analysis was carried out with the equation Y = 6.413 + 13.178X resulting in a significance value of 0.000 <0.05. The R Square value is 0.466 which means that there is an effect of increasing built-up land on land subsidence by 46.6%. While the tcount value obtained a result of 9.239 and the ttable value of 0.1966 and means tcount> ttable. So it can be concluded that Ha is rejected and Ha is accepted, which means that there is a significant influence between the increase in built-up land on land subsidence in North Jakarta City in 2014-2022
ANALISIS TINGKAT ANCAMAN LONGSOR DI DISTRIK RANSIKI KABUPATEN MANOKWARI SELATAN
Jurnal Spatial Wahana Komunikasi dan Informasi Geografi Vol 24 No 1 (2024): Spatial : Wahana Komunikasi dan Informasi Geografi
Publisher : Department Geography Education Faculty of Social Science - Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

One of the most important activities in landslide risk management is mapping the level of landslide threat. The objective of this research was to map the level of landslide threat in the Ransiki District. This study was carried out in the Ransiki District, South Manokwari Regency, West Papua Province from May to November 2021. Lithology, Geological Structure, Rainfall, Land Use, and Slope were the parameters used in this study. The stack plate method was used, and the analytical hierarchy process (AHP) method was used for parameter weighting. This AHP was used to calculate the weight of each parameter class and landslide disaster parameter. The landslide threat level was mapped using ArcGIS 10.1 software. According to the research findings, there were three levels of landslide threat in the Ransiki District, South Manokwari Regency. The low threat level covered 6,792.06 hectares, or 37.52% of total area of Ransiki District. The Ransiki District has a moderate threat level covered 6,741.33 hectares, or 37.24% of its total area. Ransiki District had a high threat level of 4,567.85 hectares, or approximately 25.24% of its total area. This study provided suggestion that in areas with moderate and high threat levels, more research can be conducted to reduce the impact and losses caused by landslides

Page 15 of 15 | Total Record : 142

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