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Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian
Published by Universitas Negeri Semarang
ISSN : 25493078     EISSN : 25493094     DOI : -
Core Subject : Science,
Earth & Planetary Sciences
Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian welcomes high-quality, original and well-written manuscripts on any of the following topics: 1. Geomorphology 2. Climatology 3. Biogeography 4. Soils Geography 5. Population Geography 6. Behavioral Geography 7. Economic Geography 8. Political Geography 9. Historical Geography 10. Geographic Information Systems 11. Cartography 12. Quantification Methods in Geography 13. Remote Sensing 14. Regional development and planning 15. Disaster
Arjuna Subject : -
Articles 555 Documents
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Analysis of Atmospheric Conditions during the Occurrence of Mesoscale Convective Complex (MCC) in East Kalimantan and Surrounding Area (Case Study: December 26, 2021) Daffa Adhitiansyah; Yosafat Donni Haryanto
Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian Vol 20, No 2 (2023)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jg.v20i2.41584

Abstract

Mesoscale Convective Complex (MCC) was first introduced in 1980 through research on infrared (IR) satellite images by Maddox. The MCC phenomenon can caused rain with a long period of time. This study aims to determine the atmospheric conditions when MCC occurred in East Kalimantan and surroundings area on December 26, 2021. The research data used in this study is Himawari-8 satellite data to display cloud top temperatures and convective cloud distribution using the CCO method and image interpretation using RGB method. Analysis of atmospheric conditions was also carried out on air humidity, vertical velocity, and reflectivity in the atmosphere obtained from weather radar data from the Stasiun Meteorologi Sultan Aji Muhammad Sulaiman - Sepinggan. Based on the results of the analysis, MCC was identified as a mature phase on December 26, 2021 at 12.00 UTC. Airmass RGB analysis shows the presence of clouds which are known as Cb clouds through CCO analysis as well as warm air masses with high humidity in East Kalimantan. Negative value of vertical velocity also indicates an updraft of moist air masses and the maximum reflectivity value of the CMAX product, which is 53 dBz, indicates strong convection activity.
Mitigation of Elephant Disturbance in Pemerihan Village, Bengkunat Sub-District, Pesisir Barat District Ardiansyah Ardiansyah; Irma Lusi Nugraheni
Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian Vol 20, No 2 (2023)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jg.v20i2.41759

Abstract

This study aims to describe the mitigation of elephant disturbance in Pemerihan Village, Bengkunat District, and West Coast District. The population in this study were all people who experienced disturbance by elephants in Pemerihan Village, Bengkunat District. The sample in this study was 52 families using a purposive sampling technique. Retrieval of data using questionnaires, observation, interviews, and documentation techniques. Data analysis using the Likert analysis technique. The results of the elephant disturbance mitigation research in Pemerihan Village are in a physical form by making guard towers, using below lights or large flashlights, and shooting firecrackers. Mitigation of elephant disturbance in the form of biology is carried out by making noise to drive the elephants away, keeping honey bees or bees ringing on the paths that are passed by elephants, and with the ERU (Elephant Responsive Unit). Mitigation of elephant disturbance in a social form is carried out by using tools that are used together to drive away elephants, forming a special task force (task force) to drive elephants into plantations and guarding plantation crops, using various sound devices such as spirit cannons and firecrackers.
Analysis of Cloud Growth Phases When Nocturnal Hail Occurs (Case Study: Sekadau, 22 August 2020) Rayhan Rinanto; Ni Putu Risna Purwandari; Yosafat Donni Haryanto
Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian Vol 20, No 2 (2023)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jg.v20i2.41841

Abstract

On August 22 2020, hail was reported in Sekadau, West Kalimantan at 21:23 WIB. The phenomenon of hail does not usually occur at night. So, further research is needed to find out how the cloud growth phase and Cumulonimbus (Cb) cloud structure are in this phenomenon. This research utilizes remote sensing instruments in the form of a C-Band type weather radar for the Supadio Meteorological Station and the Himawari 8 Satellite, as well as a radiosonde instrument that is closest to the time and location of the hail events. The results of satellite imagery show that nocturnal hail occurs before the clouds reach the mature phase, with the cloud top temperature at the time of hail less than -60 ºC. The maximum reflectivity detected by the radar using CMAX products shows a less significant value with an intensity of up to 52 dBZ. The VCUT product shows the maximum intensity altitude is at an altitude of 5 – 8 km. This shows that there is a process of ice condensation on the freezing level layer. The ZHAIL product image shows that there is a potential for hail in the Sekadau area with a probability of more than 80%. The occurrence of ice rain at Sekadau at night is caused by the presence of Cumulonimbus clouds with very cold peak temperatures and the mixing process above the freezing level which supports the formation of ice condensation in Cb clouds.
Analysis of Flood Hazards and Risk in the Sirimau District Ambon City Mohammad Amin Lasaiba
Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian Vol 20, No 2 (2023)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jg.v20i2.44028

Abstract

This study aims to target the threat and risk of flooding in Sirimau District, Ambon City from a multi-criteria perspective using a Geographic Information System (GIS). Important flood hazard characteristics include land use, elevation, slope, distance from rivers, soil, and rainfall. Two risk factors, namely population density and land use as well as flood hazard characteristics are used in flood risk analysis. Map aggregation procedure for flood risk and hazard analysis uses the Weighted Linear Combination (WLC) approach. The results of the flood hazard at the study site revealed that the flood hazard category was very high and high, namely 12.26%, and the flood hazard category was very low and low, namely 87.84% and only. The results of the flood risk in the research location revealed that the flood risk with very high and high-risk categories was around 17.28%, and very low and flood low-risk categories (82.77%). This is because the Sirimau District is mostly dominated by hilly and mountainous areas.
Study of Coconut Farming in Supporting Farmers’ Income in Kambowa District, North Buton Regency Mawari Mawari; Lely Ersilya
Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian Vol 20, No 2 (2023)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jg.v20i2.39116

Abstract

Coconut farming research was carried out with the aim of knowing the production process of coconut farming and the amount of its contribution to supporting farmers' income in Kambowa District. This study uses a survey method which is intended to find out the truth conceptually and practically realistically regarding coconut farming in supporting farmers' income. Sampling used the Simple Random Sampling method with homogeneous population limits so that the sample totaled 40 respondents or 10% of the total population of 400 heads of households who carry out coconut farming. Collecting data using observation techniques, questionnaires, interviews and documentation. Data analysis used descriptive quantitative analysis with frequency tables and calculations that only reached the percentage level. Coconut farming is carried out by farmers in a simple way on large areas of land using manual tools and technology, own capital and a small amount of labor, starting from land preparation to post-harvest. The results of coconut farming in Kambowa District average IDR 6,092,500/Ha and these results can provide a significant contribution of 34.72% in supporting farmers' income.

Page 56 of 56 | Total Record : 555

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