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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
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Search results for , issue "Vol. 2, No. 1" : 5 Documents clear
WILAYAH INTENSITAS TINGGI SEBARAN HOTSPOTS DI PROVINSI RIAU TAHUN 2005 - 2014 Harahap, Rina M
Jurnal Geografi Lingkungan Tropik (Journal of Geography of Tropical Environments) Vol. 2, No. 1
Publisher : UI Scholars Hub

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Abstract

Wilayah intensitas tinggi sebaran hotspots di Provinsi Riau tahun 2005 - 2014
PERSEBARAN TERUMBU KARANG DI WILAYAH PERAIRAN KARAWANG Fadhli, Rafdi; Pin, Tjiong Giok
Jurnal Geografi Lingkungan Tropik (Journal of Geography of Tropical Environments) Vol. 2, No. 1
Publisher : UI Scholars Hub

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Abstract

Coral reefs are one of the most important marine resource potentials in Indonesia. The purpose of this research is to analyze the influence of physical characteristics of waters on the distribution of coral reefs in the Waters of Karawang region in 2001, 2010 and 2017. The method used is field survey and image data processing using the Lyzenga algorithm to determine the distribution of coral reefs in the Waters of Karawang. The results showed that the physical characteristics of these waters affected the distribution of coral reefs in the long term which in the year 2001 - 2017, because when the physical characteristics of the waters are not in accordance with the quality standards, coral reefs do not die immediately but will undergo various processes until it dies. Temperature measurement does not affect the spread of coral reefs in the Karawang region because at temperatures that are suitable for air quality for coral reefs, coral reefs cannot live in the Karawang region. Whereas in high salinity beyond the standard threshold value, coral reefs cannot grow and develop. In ocean surface currents, live coral reefs are ready to have a pattern that is in the same direction as the average direction of ocean currents in the initial time.
VARIASI SPASIOTEMPORAL URBAN HEAT ISLAND DI KAWASAN PERKOTAAN YOGJAKARTA TAHUN 2015-2017 Zahro, Haura; Sobirin, Sobirin; Wibowo, Adi
Jurnal Geografi Lingkungan Tropik (Journal of Geography of Tropical Environments) Vol. 2, No. 1
Publisher : UI Scholars Hub

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Abstract

The limitation of Yogyakarta City to meet the demand for impervious land make the development expands to Sleman and Bantul regency so that formed the Urban Area of Yogyakarta. This study aims to determine the pattern of surface temperature, its relationship with the vegetation greenness and the occurrence of the UHI phenomenon in the Urban Area of Yogyakarta in 2015- 2017. The surface temperature was obtained from Landsat 8 OLI / TIRS image processing by the mono-window method and validated by direct air temperature measurement, vegetation greenness with NDVI algorithm and UHI when the surface temperature above 30 ºC. The results show that the farther from the city center the surface temperature drops to 0.93ºC per kilometer. The highest surface temperatures occur in October 2015 and September 2017. The surface temperature has a strong correlation value with vegetation greenness with correlation coefficient up to -0.709 that is the higher the vegetation greenness the lower surface temperature. UHI phenomenon occurs every month with variation 11,85-4,01ºC and the highest surface UHI phenomenon occurs in October 2015with 41,85ºC. In conclusion, the UHI phenomenon occurs every month with the highest temperature and most intensive area of the UHI phenomenon is in October 2015.
WILAYAH POTENSI IKAN PELAGIS PADA VARIASI KEJADIAN ENSO DAN NORMAL DI SELAT SUNDA Nurkhairan, Yulianti; Supriatna, Supriatna; Susiloningtyas, Dewi
Jurnal Geografi Lingkungan Tropik (Journal of Geography of Tropical Environments) Vol. 2, No. 1
Publisher : UI Scholars Hub

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Abstract

Indonesia's geographical location resulted in the fisheries in the Sunda Strait also affected by global climate dynamics. One of them is the ENSO (El Nino-Southern Oscillation) phenomenon in the Pacific Ocean that affects the seasons and marine waters in Indonesia. The fishery in the Sunda Strait has a commodity of pelagic fish where potential area can be estimated from oceanographic parameters such as sea surface temperature (SST) and chlorophyll-a concentration in marine waters. The dynamics of the spatial and temporal parameter of oceanography due to the variation of ENSO phenomena can be identified from Aqua satellite images carrying the MODIS sensor. Information on potential areas of pelagic fish is needed to help the effectiveness of fishery activities and increase the production of capture fisheries. Monthly oceanographic parameters in the Sunda Strait are overlayed based on 4 seasonal variations in a year on each variation of the ENSO phenomenon and are classified by moderate, potential, and very potential classes. As a result, the potential areas of very potential pelagic fish in the Sunda Strait in the La Nina and El Nino phenomena are greater than in normal conditions and occur in the east seasons until the second transition. The spread is in the Indian Ocean to the west of the Sunda Strait.
PEMODELAN DEBIT BANJIR SEHUBUNGAN DENGAN PREDIKSI PERUBAHAN TUTUPAN LAHAN DI DAERAH ALIRAN CI LEUNGSI HULU MENGGUNAKAN HEC-HMS Marko, Kuswantoro; Zulkarnain, Faris
Jurnal Geografi Lingkungan Tropik (Journal of Geography of Tropical Environments) Vol. 2, No. 1
Publisher : UI Scholars Hub

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Abstract

Upper Ci Leungsi catchment area is one of the catchments that has an important role in contributing water runoff to downstream areas i.e. Bekasi City. High population growth has led to significant changes in land use that impact in potentially increased surface runoff causing flooding. This study aims to estimate the flood discharge that will occur in relation to land cover change prediction in 2020, 2025, and 2030. The SCS-CN method is used for calculation of runoff volume and synthetic unit hydrograph using HEC-HMS. The CN value obtained on the existing data i.e. 72.5; 74.4; and 75.4 in 2005, 2010, and 2014 respectively, whereas the predicted CN values in 2020, 2025 and 2030 increased by 77.2; 78.4; and 79.4 respectively. This study concludes that the prediction of flood discharge in 2020, 2025, and 2030 has increased, from 2020 to 2025 by 28.4%, and from 2025 to 2030 by 26.8%. For a 25-year re-period with 197mm design rainfall resulted in flood discharge of 624.6, 653.0, and 679.8 m3 / dt in 2020, 2025, and 2030 respectively. This study is highly useful for urban development planning, particularly in anticipating the damages due to floods in future.

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