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INDONESIA
Jurnal Geografi LIngkungan Tropik (Journal of Geography of Tropical Environments)
Published by Universitas Indonesia
ISSN : -     EISSN : 25979949     DOI : 10.7454/jglitrop
Core Subject : Science,
Earth & Planetary Sciences
JGLITROP is a scientific journal published by Department of Geography at the University of Indonesia focuses on the application of Geography in tropical environment. The focus of the issues consist of: Physical Geography Human Geography Remote Sensing Geographic Information System Environmental Sciences Multidiscipline/Others
Arjuna Subject : Ilmu Bumi dan Planet (semua kategori) - Ilmu Bumi dan Planet (Lain-Lain)
Articles 5 Documents
 1 
Search results for , issue "Vol. 1, No. 1" : 5 Documents clear
PEMODELAN KEJADIAN BANJIR DAERAH ALIRAN SUNGAI CILIWUNG HULU DENGAN MENGGUNAKAN DATA RADAR Putiamini, Sepanie; Kusratmoko, Eko; Syamsudin, Fadli
Jurnal Geografi Lingkungan Tropik (Journal of Geography of Tropical Environments) Vol. 1, No. 1
Publisher : UI Scholars Hub

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Abstract

. This study reports the applicability of hydrological modeling, HEC-HMS, integrated with Geographic Information Systems (GIS) to examine the rainfall - runoff relationship with a case study of Upper Ciliwung watershed. Spatial rainfall data derived from radar data used in the process of simulating rainfall - runoff and the results are compared with simulation results using the observed rainfall data. Analysis of the rainfall-runoff simulation was conducted based on spatial approach by comparing the differences and similarities between sub catchments. The simulations carried out for the flood events in 2002, 2007 and 2013. The results of the simulation of rainfall - runoff using C-Dopller weather rainfall radar data shows the sub-watershed of Ciliwung (Tugu) produced discharge with the highest volume in January - February 2002 and 2007, and also 16 - 17 January 2013, i.e. 117 mm, 124 mm and 46 mm, respectively. Physical characteristics of the watershed such as slope, land use, and soil type, are the factors that determine the high discharge value. The results of validation using RMSE and Nash produces small deviation value of the observation data. It shows that the use of weather radar data is reliable in the rainfall-runoff simulation in the Upper Ciliwung watershed
VARIABILITAS CURAH HUJAN DI KABUPATEN KEBUMEN Indratmoko, Satria; Harmantyo, Djoko; Kusratmoko, Eko
Jurnal Geografi Lingkungan Tropik (Journal of Geography of Tropical Environments) Vol. 1, No. 1
Publisher : UI Scholars Hub

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Abstract

Rainfall is highly variable climate elements, either in space or time scale. Variation of this rainfall will have an impact on the determination of the start of the planting of rice plants in particular. Through a statistical calculation and mapping of spatial data, this research will reveal a pattern of early growing season in response to rainfall variability in Kebumen Regency over a period of thirty years, i.e. 1981-2010. Spatial analysis with a reinforced approach statistics reveal that the coastal region in Kebumen Regency have a high rainfall variability with an average of rainfall is low. The higher the variability of annual precipitation totals declined, followed by the average rainfall is high. In addition, the beginning of paddy planting season begins in areas with low rainfall variability (the hills) to the region's high rainfall variability (coastal). In the period 1981-2000, paddy planting season begins early from the North and at regular intervals toward the South. On the other hand, in the period 2001-2010 paddy planting season begins early from the Northwest and at regular intervals toward the Southeast.
WILAYAH RAWAN LONGSOR DI KOTA JAYAPURA Abrauw, Rudolf D
Jurnal Geografi Lingkungan Tropik (Journal of Geography of Tropical Environments) Vol. 1, No. 1
Publisher : UI Scholars Hub

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Abstract

Jayapura City is area that located in the north of the island of Papua and dealing directly with the Pacific Plate, so the potential for geological disasters, one of which is a landslide. However, landslides occur not only influenced by the movement of the Pacific Plate (because of occurrences fault / faults), but also a slope that varies from lowlands (0-8%) to the hills (> 45%), lithological and climatic conditions. This study aims to map areas vulnerable to landslides based Geographic Information System (GIS) using two models, namely, [1] the model prediction of landslides Directorate of Volcanology and Geological Hazard Mitigation (DVMBG) in 2005 with the parameters rainfall, geology, soil type, slope and land use; and [2] a combination of landslide prediction model of the Land Research Center with the parameters slope, rainfall, geology, soil type, distance of fault / faults and density of vegetation. The second result is verified with the data model of landslide occurrence during the period 2002-2014. The results showed that the application of the two models show the differences in the distribution of areas vulnerable to landslides. The first model produces an area prone to landslides with a high classification of 16780 hectares, while the second model recorded only 2184 Ha. Verification results with field data show that the second model is more representative and could be used to identify areas vulnerable to landslides in the city of Jayapura
EVALUASI DATA PULAU KABUPATEN LOMBOK TIMUR PROVINSI NUSA TENGGARA BARAT Destarina, R; Ardi, C S; Hanafi, Hanafi
Jurnal Geografi Lingkungan Tropik (Journal of Geography of Tropical Environments) Vol. 1, No. 1
Publisher : UI Scholars Hub

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Abstract

The availability of a complete, accurate and up to date islands’ data and information can be a reference for the government in developing the potential of islands in Indonesia. National Team for Standardization Topographic Names (TNPNR) has standardized a number of 13.466 names in the Indonesian island Gazetteer in 2013, including 35 islands in East Lombok. A validation activity through field survey which was conducted in 2016 discovered the discrepancies in toponyms or existing status of several islands in the East Lombok. The wrong toponyms refer to a location that is completely different from the one requested. Therefore, it has fatal consequences and can hinder development. As a follow up, verification and standardization of islands’ name is conducted, which was attended by the Ministry / Agency member of TNPNR as well as the local government. Results of verification set forth in the official report stating that evaluation and correction of the data islands in East Lombok has been conducted, including adjustments of toponym, status and amount to 43 islands.
PERANAN PENGINDERAAN JAUH DALAM MENYOKONG KAJIAN PEMETAAN BATAS WILAYAH DARAT (STUDI KASUS: DESA BATURETNO, KECAMATAN BANGUNTAPAN, KABUPATEN BANTUL, DIY) Ahmad, A G
Jurnal Geografi Lingkungan Tropik (Journal of Geography of Tropical Environments) Vol. 1, No. 1
Publisher : UI Scholars Hub

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Abstract

Border mapping is an activity which could be done continuously as the region develops. Many kinds of methods in border mapping have been done, and each has strength and weakness. Technology of remote sensing which continues to develop can be used to optimize border mapping to be more efficient. Remote sensing is one of the way to know the condition of earth surface, which in border mapping uses high resolution image, Quickbird image. The spatial accuracy of Quickbird image which reaches 2.4 meters per pixel can be used to monitor land use, to be created into a map which gives various basic spatial information. Border search that has been agreed on is done on the image, meanwhile field activity is done as additional information in border search. Three sample points that is taken during the research show that remote sensing information that is got can support regional border search because there are differences between BPS data and automatic calculation result according to real regional border, where the area reaches 24 hectares. The study using Quickbird image can be optimized for regional border search on land which has homogenous physical condition.

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