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Geographica: Science and Education Journal
Published by Universitas Sembilanbelas November Kolaka
ISSN : 27236560     EISSN : 27164837     DOI : https://doi.org/10.31327/gsej.v4i2
Core Subject : Science, Education, Social,
Earth & Planetary Sciences Education Environmental Science Social Sciences
Geographica: Science and Education Journal is the information media for academics and researchers who have attention to developing the Geography both science and education. Geographica: Science & Education Journal is published by Study Program of Geography Education, Universitas Sembilanbelas November Kolaka. It provides a way for students, lecturers, and other researchers to contribute to the scientific development of Geography. Our scope of publications encompasses geography education, physical geography, human geography, regional planning and development, remote sensing and GIS. Geographica: Science and Education Journal welcomes original Research Articles and Review Papers. Geographica: Science & Education Journal publishes its issues twice a year in June and December.
Arjuna Subject : Ilmu Bumi dan Planet (semua kategori) - Proses Permukaan Bumi
Articles 6 Documents
 1 
Search results for , issue "Vol 4, No 1 (2022): June" : 6 Documents clear
STABILITY ANALYSIS OF SLOPE ON TRANS SULAWESI ROAD, PONTOLO VILLAGE, MANANGGU SUB-DISTRICT, BOALEMO DISTRICT, GORONTALO PROVINCE Indriani Indriani; Sri Maryati; Ronald Hutagalung
Geographica: Science and Education Journal Vol 4, No 1 (2022): June
Publisher : USN Kolaka

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (719.731 KB) | DOI: 10.31327/gsej.v4i1.1792

Abstract

The research location is in Pontolo Village, Mananggu Sub-district, Boalemo District, Gorontalo Province. The research location has rock slopes with a discontinuity area in the form of fractures in the rock body, which is a factor causing landslides. The research aims to determine geological conditions, rock mass quality, types of potential landslides, and recommendations for slope stability. The methods used are direct field observation, Scanline Mapping, Rock mass Rating (RMR), kinematics analysis, and Slope Mass Rating (SMR). The results of the geomorphological research of the research area are units of lava flow plains and units of intrusive hills. The lithology of the research area is in the form of granodiorite units and porphyry dacite units, while the geological structure is in the form of joints. Scanline mapping is carried out in 4 segments: segment 1, segment 2, segment 3 and segment 4. The rock mass class consists of 2 classes, a good class and a fair class. Types of landslides consist of wedge sliding and toppling sliding. SMR consists of 2 classes, stable and unstable, the results of observations that unstable slopes need to be handled in slope reinforcement.
EROSION HAZARD ANALYSIS USING SPATIAL MODELING: A CASE STUDY OF THE TEMBESI WATERSHED, SAROLANGUN REGENCY, JAMBI PROVINCE Fadhila Afnan; Dasrizal Dasrizal; Erna Juita
Geographica: Science and Education Journal Vol 4, No 1 (2022): June
Publisher : USN Kolaka

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (671.7 KB) | DOI: 10.31327/gsej.v4i1.1816

Abstract

The formulation of the problem in this study is the characteristics of erosion, the level of erosion hazard, and the spatial model of erosion hazard in the Tembesi watershed, Sarolangun Regency, Jambi Province. Then the main purpose of this study is to determine the level of erosion hazard at the research location points, which will then be spatialized using ArcGIS 10.4. In this study, the research method used is the descriptive qualitative method. Because seeing the information and description of the level of erosion hazard in the Tembesi watershed, Sarolangun Regency, Jambi Province. The data of this study include primary data, namely direct measurements and observations in the field and secondary data, namely data obtained through the relevant agencies. The results obtained in this study are: First, the erosion characteristics at the research location points have two dimensions, namely V and U-shaped dimensions with a depth of 30 cm and some 30cm. Second, the erosion hazard level was calculated using the USLE method, with the results at the research site points 2.00 tons/ha/year. Third, the spatial model used in this research is Arc GIS 10.4. With each level of erosion, hazards are 5.87 (very mild), 29.36 (mild), 2.94 (very light), 2.94 (very mild), 5.87 (very mild), 29, 36 (light), and 205.52 (heavy).
TOURIST PERCEPTIONS ON THE ATTRACTION OF KALOMANG BEACH TOURISM OBJECTS IN WATUBANGGA DISTRICT, KOLAKA REGENCY Irvan Siswanto; Nasarudin Nasarudin; Sudarwin Kamur
Geographica: Science and Education Journal Vol 4, No 1 (2022): June
Publisher : USN Kolaka

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (566.141 KB) | DOI: 10.31327/gsej.v4i1.1827

Abstract

This research aims to describe the characteristics of tourists who visit the Kalomang Beach tourist attraction, as well as the tourists' perceptions of the attractiveness of the Kalomang Beach tourist attraction in terms of the dimensions of tourist attractions, accessibility, facilities, and services. This research is a type of quantitative descriptive research with respondents, namely all tourists who visit the Kalomang Beach tourist attraction. Determination of the sample using the Corchan formula and obtained a sample of 100 respondents with a sampling technique that is incidental sampling. Data collection using interview techniques, questionnaires and documentation; the data processing in this research used a tabular descriptive analysis technique. The results showed that tourists' perceptions of the attractiveness of the Kalomang Beach tourist attraction in terms of the dimensions of attractions, accessibility, amenities, and service overall got a good category from tourists. Judging from the dimensions of attractions, Kalomang Beach got a score of 384.75 with a good category from tourists; for the accessibility dimension, it got a score of 416.5 with an excellent category from tourists. The amenities dimension got a score of 377,375 with a good category from tourists, and finally, the service dimension got a score of 385.5 with a good category from tourists.
INDIRECT EFFECT OF LAND COVER TOWARD ON CLOUD OPTICAL THICKNESS OVER INDONESIA Jeddah Yanti; Togi Tampubolon; Chian Yi Liu
Geographica: Science and Education Journal Vol 4, No 1 (2022): June
Publisher : USN Kolaka

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (613.825 KB) | DOI: 10.31327/gsej.v4i1.1674

Abstract

The inter-relation between land surface changes (land cover) and local climate affect other atmospheric phenomenon such as clouds and their formation and properties. The Earth’s hydrological cycle is complex system describing the mutual relationship between Earth's surface and the atmospheric component, as a consequence, small changes to one part of the system can accrue to have larger effects on the other system as a whole.  NDVI and cloud optical thickness obviously allocated in wet season than dry season, with fluctuated in uphill and downhill polynomial. According to wet season, downhill line of cloud optical thickness ware detected as mean value on every November during 14 years. At 1 percent of NDVI fluctuation declined two times of optical depth otherwise. Absolute result in wet season may be due to more stable and homogeneous data variability. Least sunlight for vegetation growth and the least amount of evapotranspiration energy, less cloud forms.
ANALYSIS OF CLEAN WATER NEEDS IN RANOKOMEA VILLAGE, WEST POLEANG DISTRICT, BOMBANA REGENCY Ayu Asriani; Nasarudin Nasarudin; Chairuddin Chairuddin
Geographica: Science and Education Journal Vol 4, No 1 (2022): June
Publisher : USN Kolaka

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (360.125 KB) | DOI: 10.31327/gsej.v4i1.1826

Abstract

The background of this research is the clean water in the village of Rakomea, which is inadequate because the amount of clean water discharge is not evenly distributed to all residential residents. This study aims to determine the clean water needs of the Ranokomea village community, West Poleang district, Bombana regency, in 2020 and the projected the year 2025. This research uses a quantitative descriptive research method with a sample of 81 family heads. The results showed that the needs for the net water of the people of Ranokomea village were 63,037 litres/person/day, and clean water needs in the year of 2025 projection namely 63.03 litres/person/day. Based on the feasibility standards of clean water needs issued by the UNESCO World Agency, namely 60 litres/person/day then, the needs of the people of Ranokomea village are not fulfilled because in 2020, people′s clean water needed 57.11 litres/person/day and in the year of 2025 projection namely 63.03 litres/person/day.
THE RELATIONSHIP BETWEEN URBAN HEAT ISLAND ON LAND USE CHANGES AND ENVIRONMENT CRITICAL INDEX IN SEMARANG CITY Abd Basith Mukhlas; Satya Budi Nugraha; Hariyanto Hariyanto; Heri Tjahjono
Geographica: Science and Education Journal Vol 4, No 1 (2022): June
Publisher : USN Kolaka

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1428.694 KB) | DOI: 10.31327/gsej.v4i1.1732

Abstract

The global climate problem issues have intensified lately. Many countries have agreed to reduce greenhouse gas (GHG) emissions that harm atmospheric conditions. However, fossil fuel use and a decrease in forest area continue to increase. The land use changes from vegetated to built areas could cause an environmental imbalance, primarily the urban heat island phenomenon. Semarang is one of the big cities in Indonesia with a relatively large urban area development condition. The population growth of Semarang City every year reaches an average of 1%, with population density in 2019 as much as 4,754 people per square kilometre. It makes the Semarang City area vulnerable to the urban heat island phenomenon. Moreover, the widespread use of the non-forest area is not matched by an increase in the area of green open space. The use of remote sensing technology, such as satellite imagery, is one of the solutions to monitor the urban heat island phenomenon in Semarang City and is used. Landsat 7 and 8 imagery types (Landsat Collection imagery) are used in this study to obtain the urban heat island value of Semarang City from 2003 to 2021. This study will explain how the temporal distribution pattern of the urban heat island phenomenon and the relationship between the urban heat island phenomenon and the existing land use in Semarang. This research is also equipped with an analysis of the environmental criticality index due to the impact of the urban heat island to find out more about how big the environment receives the effect.

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