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INDONESIA
Jurnal Meteorologi Klimatologi dan Geofisika
Published by Sekolah Tinggi Meteorologi Klimatologi dan Geofisika
ISSN : 23557206     EISSN : 25988190     DOI : -
Core Subject : Science, Education, Social,
Astronomy Earth & Planetary Sciences Environmental Science Mathematics Physics
Journal of Meteorology Climatology and Geophysics (Journal of MKG) is a scientific journal as a means of communication to report the results of research in the field of meteorology, climatology, air quality, geophysics, environment, disaster, and related instrumentation. This scientific journal is published every four months of the year.
Arjuna Subject : -
Articles 107 Documents
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KAJIAN PENGARUH SIKLON TROPIS MANGGA TERHADAP CURAH HUJAN, TRANSPOR EKMAN, VISKOSITAS EDDY DAN TINGGI GELOMBANG DI PERAIRAN SELATAN JAWA PADA 20-25 MEI 2020 Satria Ginanjar; Muhammad Fikry Syach; Siti Wulandari
Jurnal Meteorologi Klimatologi dan Geofisika Vol 7 No 2 (2020): Jurnal Meteorologi Klimatologi dan Geofisika
Publisher : Unit Penelitian dan Pengabdian Masyarakat Sekolah Tinggi Meteorologi Klimatologi dan Geofisika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36754/jmkg.v7i2.193

Abstract

Tropical cyclone of Mangga formed on May, 20th – 25th 2020, located in southwest of Bengkulu, pricesly at coordinates of 9,8oS and 93,0oE over Indian Ocean Waters. This Cyclone does not cross Indonesia however can affect oceanographic parameters in Indonesia, notably on Southern Waters of Java . This study aims to determine changes in oceanographic parameters in the form of Ekman mass and volume transport, viscosity of Eddy and wave height during the Mangga Cyclone. The data used in reanalysis data extraction of surface wind direction and magnitude into wave height data, while Ekman transport and Eddy viscosity use combined surface wind data obtained from ERA5, also processed using IDL programming. The velocity of Mangga tropical cyclone became a tropical depression on May 19th 2020 was 14.07 m/s until its peak on May 20th, 2020 has maximum velocity at 14.07 m/s or 27.36 knots which has an impact on increasing Ekman transport velocity was 38,2 m2/s; Eddy’s mean viscosity was 23,36 m2/s; Rainfall mean was 165mm/day; and maximum wave height was 4.01 meters. These conditions also effect other oceanographic parameters and characteristic such as transformation of Eddy current patterns, upwelling events, and cooling sea surface temperatures (in combination with cloud cover effects) that occur during Mangga cyclone in the southern waters of Java.
ANALISIS INDEKS KERENTANAN SEISMIK, PERIODE DOMINAN, DAN FAKTOR AMPLIFIKASI MENGGUNAKAN METODE HVSR DI STAGEOF TANGERANG Afra Kansa Maimun; Ulfa Nur Silvia; Vida Julia J.; Puji Ariyanto
Jurnal Meteorologi Klimatologi dan Geofisika Vol 7 No 2 (2020): Jurnal Meteorologi Klimatologi dan Geofisika
Publisher : Unit Penelitian dan Pengabdian Masyarakat Sekolah Tinggi Meteorologi Klimatologi dan Geofisika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36754/jmkg.v7i2.194

Abstract

Microtremor is a natural harmonic vibration of the soil that occurs continuously with a low amplitude of about 0.1 - 1 micron. Microtremor characteristics show rock characteristics and types based on the value of its dominant period are used to analyzing the response of rocks to amplification of vibrations. In collecting microtremor data, we use the TDL 303S (Taide Digital Seismograph) equipment and the DS-4A Short Period Seismograph type seismometer with a recording duration of 30-45 minutes. Microtremor data measurements were carried out at 20 research points with a distance of 1 meter between points. Microtremor data processing until reach natural frequency values ​​(F0) using the Horizontal to Vertical Spectral Ratio (HVSR) method obtained by Geopsy software. From the results of microtremor data processing, it can be seen that the distribution of the dominant period value, amplification factor, and seismic vulnerability index (Kg) at Tangerang Geophysics Station. From this research, it is known that the average dominant period (Tdom) in Stageof Tangerang is (0.6572 seconds), the amplification factor is 2.4357, and the seismic vulnerability index (Kg) is 3.8991. This value shows that the dominant soil layer in this area is site class E alluvial soil T0> 0.6 seconds, this indicates that the soil type is very prone to earthquakes. But in terms of the seismic vulnerability index, low amplification factor, and dominant period it is relatively low so the impact is insignificant.
KAJIAN VARIASI TOTAL ELECTRON CONTENT (TEC) DI IONOSFER SEBELUM GEMPABUMI BANTEN 2019 Ali Azimi
Jurnal Meteorologi Klimatologi dan Geofisika Vol 7 No 2 (2020): Jurnal Meteorologi Klimatologi dan Geofisika
Publisher : Unit Penelitian dan Pengabdian Masyarakat Sekolah Tinggi Meteorologi Klimatologi dan Geofisika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36754/jmkg.v7i2.195

Abstract

Earthquakes are one of natural disasters frequently occur in Indonesia. A large earthquake has potential to make detrimental impacts such as casualty and material loss. Researchers around the world have been carrying out studies related to earthquake precursors before an earthquake occurs. The studies of the emergence of total electron content (TEC) anomaly in the ionosphere is one of variable observed by researchers to find the earthquake precursors. Stress accumulation in the lithosphere can cause microfractures resulting in the charged particles may release from those microfractures around the earthquake preparation zone toward the atmosphere and disturb the TEC in the ionosphere. This research aims to find the anomaly of TEC before The 2019 Sunda strait earthquake with M 6.9 close to the province of Banten of Indonesia. This study implements the correlation technique with a threshold. The TEC data obtained from Global Ionospheric Maps (GIM) of the Center for Orbit Determination in Europe (CODE). It shows that an anomaly of TEC was recorded 22 days before the earthquake. The Dst (Disturbance storm time) index is also used to validate that the recorded anomaly is not caused by the geomagnetic storm.
RANCANG BANGUN SISTEM PERINGATAN DINI DEMAM BERDARAH DENGUE (DBD) (Studi Kasus Demam Berdarah Dengue dan Curah Hujan di Wilayah Kota Jakarta Timur) Muhammad Agung Prabowo; Hariyanto; Amir Mustofa Irawan
Jurnal Meteorologi Klimatologi dan Geofisika Vol 7 No 2 (2020): Jurnal Meteorologi Klimatologi dan Geofisika
Publisher : Unit Penelitian dan Pengabdian Masyarakat Sekolah Tinggi Meteorologi Klimatologi dan Geofisika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36754/jmkg.v7i2.196

Abstract

Dengue Hemorrhagic Fever (DHF) is a disease carried by the Aedes Agypti which is related with weather parameters that affect breeding and growth of mosquitoes, specifically the factors of humidity, temperature, and rainfall. East Jakarta is the city with the highest DHF risk in the DKI Jakarta Province every year. Dengue cases often occur during the rainy season and Dengue Fever Early Warning System (DHF) is needed to provide information to public for control and mitigation. This system is designed using a Tipping Bucket, DHT22 Sensor, SIM900A, RTC with solar power supply. The Dengue Hemorrhagic Fever Early Warning System uses Arduino Mega 2560 as a processing component. The data is sent to the server via the internet and displayed on Android applications and 20x4 LCDs, it is also stored on SD cards and online databases. The results of testing this instrument at the East Jakarta Pekayon District Office on November 30, 2019 – January 1, 2020, showed that the system was able to send data and provide measurement information and early warning information every day displayed on the Android application.
EVALUATING METEOROLOGICAL DATA FOR NUCLEAR POWER PLANT (NPP) PUSPIPTEK SERPONG Deni Septiadi; Arief Yuniarto; Agung Hari Saputra
Jurnal Meteorologi Klimatologi dan Geofisika Vol 7 No 3 (2020): Jurnal Meteorologi Klimatologi dan Geofisika
Publisher : Unit Penelitian dan Pengabdian Masyarakat Sekolah Tinggi Meteorologi Klimatologi dan Geofisika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36754/jmkg.v7i3.197

Abstract

Precise and consistent meteorological data is needed to support safety and security as well as in an effort to meet safety requirements and criteria from the initial stages of siting, design, construction, even activities in the previous stages to the operation stage, handling safety during and during decommissioning and waste management radioactive. Therefore, the aim of this study is to identify and analyze the distribution of data distribution to see the extent to which meteorological data for nuclear site area provide accurate and precise data so that it can be used scientifically. In the present paper, the concentrations calculated by this method are compared with data observed over Portable Weather Station (PWS) and existing Automatic Weather Stations (AWS). Good agreement was confirmed in similar data observed and existing of PWS or AWS data due to statistically calculating test using correlation, deviation and Root Mean Square Error (RMSE). The two AWS tested, both Experimental Power Reactor (RDE) and Nuclear Serpong Area (KNS), gave fairly good scores statistically. Analysis on October 13, 2020, the value of RMSE, and the correlation between AWS RDE and KNS, respectively, is 361.2; 67.6 and 0.56. Then the data analysis on October 14, 2019 which compared AWS RDE and PWS, the value of Standard Deviation, RMSE, and the correlation between AWS RDE and PWS were 137.3; 8.65 and 0.48. The availability of good data is 98.3% for RDE and 95.3% for KNS, respectively.
PEMETAAN PERKIRAAN POTENSI GELOMBANG LAUT SEBAGAI PEMBANGKIT LISTRIK TENAGA GELOMBANG LAUT DENGAN SISTEM PELAMIS DI PERAIRAN NIAS Muhammad Fikry Syach; Muhammad Farras Ayasy; Novia Safinatunnajah
Jurnal Meteorologi Klimatologi dan Geofisika Vol 7 No 3 (2020): Jurnal Meteorologi Klimatologi dan Geofisika
Publisher : Unit Penelitian dan Pengabdian Masyarakat Sekolah Tinggi Meteorologi Klimatologi dan Geofisika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36754/jmkg.v7i3.198

Abstract

The need for electricity using alternative energy is very necessary to replace fossil energy, notably coal power plant sector which is very polluting the environment, the development of alternative energy also supports the realization of sustainable development goals (SDGs) in providing clean and renewable energy. Indonesia has great potential in developing ocean wave energy of around 41 gigawatts, so that it can help to fullfil national electricity consumption. The purpose of this study is to determine the ocean wave potential using conversion of power density of Pelamis (Sea Dragon) electricity analysis in Nias Waters, North Sumatera. This study uses quantitive-case method. This study uses surface wind data from ERA5 and ASCAT in 2019; by processing wind data to generate wind roses using WRPlot software, SMB (Sverdrup-Munk-Bretschneider) method to determine wave forecasting and wave equation using IDL programming, as well as the wave energy density equation using mass-Damper-system electrical energy conversion in the Pelamis module. Based on the study, the results of significant wave height and periode are obtained 0.63 meters and 4.05 seconds, with the conversion angle between the Pelamis arms module is 46,85o using Damper spring between 1.00-1.73 meters, with average of ocean wave density is 82,01 kW/m2; maximum kW/m2; minimum 17,32 kW/m2.
PENGARUH KETERSEDIAAN RUANG TERBUKA HIJAU TERHADAP TINGKAT KENYAMANAN TERMAL DI WILAYAH PERKOTAAN (Studi Kasus di Kelurahan Sokanegara, Kota Purwokerto) Asri Sekar Ningrum; Muhamad Khairul Rosyidy; Novia Rahmat Desti Sukmawati; Ike Widia Ariani; Astrid Damayanti
Jurnal Meteorologi Klimatologi dan Geofisika Vol 7 No 3 (2020): Jurnal Meteorologi Klimatologi dan Geofisika
Publisher : Unit Penelitian dan Pengabdian Masyarakat Sekolah Tinggi Meteorologi Klimatologi dan Geofisika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36754/jmkg.v7i3.199

Abstract

Population increasing in the city of Purwokerto affects the increase in built-up area and reduced vegetation areas or Green Open Space (RTH). According to the Ministry of Public Works, urban areas must provide green open space (RTH) as much as 30% of the total area. The condition of Green Open Space (RTH) and its availability is important for a city because it will greatly affect the environmental conditions and microclimate around the area. This study aims to determine the availability of Green Open Space (RTH) in urban areas and its effect on the level of thermal comfort by emphasizing the Sokanegara, Purwokerto City. The data used is the Sentinel-2A satellite image data acquisition of 12 September 2019, for analysis of the distribution of green open spaces using the NDVI (Normalized Difference Vegetation Index) algorithm. The method to get the level of thermal comfort is to use the THI (Thermal Humidity Index) index. The results indicated that all types of green open space in Sokanegara sub-district categorized as uncomfortable because the THI value at each sample point of green open space is more than 28 ℃. Therefore, further planning is needed to increase the Green Open Space in Sokanegara Village, East Purwokerto.
NORMAL STANDAR KLIMATOLOGI UNTUK PEMETAAN POTENSI ENERGI ANGIN DAN SIMULASINYA DI WILAYAH KALIMANTAN BARAT Firsta Zukhrufiana Setiawati; Ananggirieza Nugraha2
Jurnal Meteorologi Klimatologi dan Geofisika Vol 7 No 3 (2020): Jurnal Meteorologi Klimatologi dan Geofisika
Publisher : Unit Penelitian dan Pengabdian Masyarakat Sekolah Tinggi Meteorologi Klimatologi dan Geofisika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36754/jmkg.v7i3.201

Abstract

Today, there are more and varied researches on renewable energy, including on utilization of wind energy. Wind energy has been used to generate 147 MW of electricity in Sidrap and Jeneponto (South Sulawesi). The present study is prepared to determine the amount of wind energy potential and its capability in the power produced in West Kalimantan. The study was performed using statistic calculation and analysis by using data of wind speed at an altitude of 10 meters above ground level from manual observation and PSD reanalysis, NOAA. The research result shows that wind energy potential is relatively low in June and December, as shown in the map of wind energy potential based on climatological standard normal. Following shear pattern on streamline, central West Kalimantan has the lowest wind energy potential (< 25 W/m2). The highest wind energy potential is in Ketapang Regency (Tumbang Titi Sub-district) which is > 52 W/m2). HOMER simulation for Tumbang Titi shows wind energy potential can be used to generate into 9,457 kWh/year and requires $4,071.15, with most of the expenses for wind turbine which amounts to $3,632.61.
KAJIAN KECEPATAN TRANSFER GAS KARBONDIOKSIDA (CO2) SAAT SIKLON TROPIS DI LAUT SELATAN JAWA SECARA KLIMATOLOGI PADA BULAN MARET, APRIL, MEI TAHUN 2008 HINGGA 2020 Ardiansyah Desmont Puryajati; Satria Ginanjar
Jurnal Meteorologi Klimatologi dan Geofisika Vol 7 No 3 (2020): Jurnal Meteorologi Klimatologi dan Geofisika
Publisher : Unit Penelitian dan Pengabdian Masyarakat Sekolah Tinggi Meteorologi Klimatologi dan Geofisika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36754/jmkg.v7i3.202

Abstract

Tropical cyclones can move huge amounts of heat energy from oceans into atmosphere. The transfer of heat between oceans and atmospheres is related to the transfer of CO2 gas from oceans to atmospheres. Tropical cyclones affect the absorption of CO2 into atmosphere, where wind speed and sea surface temperatures play a role in the release of CO2 into atmosphere. The study examined how tropical cyclones affect the transfer of CO2 gas from oceans to atmosphere in the Southern sea of Java in the transition season 1, which is March, April, and May starting from 2008 to 2020. The method used in the form of analysis of atmospheric and ocean dynamics uses data components of wind speed direction u and v at altitude of 10 meters as well as sea surface temperature data. The data was obtained from the ERA5 reanalysis model which is the fifth generation of ECMWF. The maximum speed of monthly CO2 transfer in March was 150 m/s, in April at 122.3 m/s, and in May at 122.3 m/s. The climatology results show that the speed of CO2 transfer is maximum when a tropical cyclone occurs in March and at least in tropical cyclones that occur in May.
ANALISI HUBUNGAN MAGNITUDO GEMPA BUMI TERHADAP HASIL FREKUENSI DOMINAN PADA RANGKAIAN GEMPA ACEH 2004, YOGYAKARTA 2006, PALU DAN LOMBOK 2018 SEBAGAI UPAYA MITIGASI BENCANA Nela Elisa Dwiyanti; Vira Irnanda, Elleona Septi N; Indriati Retno Palupi; Wiji Raharjo; Wrego Seno Giamboro; Afriliani M Handini; Ananda Achlaqul Karimah; Ririn Setyowati; Edoarddo Tobing
Jurnal Meteorologi Klimatologi dan Geofisika Vol 7 No 3 (2020): Jurnal Meteorologi Klimatologi dan Geofisika
Publisher : Unit Penelitian dan Pengabdian Masyarakat Sekolah Tinggi Meteorologi Klimatologi dan Geofisika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36754/jmkg.v7i3.203

Abstract

Indonesia is located at the boundaries of three major plate of the world, namely Indo-Australia, Eurasia, and the Pacific Plates. This has made Indonesia prone to earthquakes, so mitigation are needed. The purpose of this research is to determine the empirical relationship between earthquake magnitude and dominant frequency results based on several major earthquake events in Indonesia such as in Aceh 2004, Yogyakarta 2006, Lombok and Palu 2018 as an effort to earthquake hazard mitigation in Indonesia. Magnitude carries information about earthquake power based on the energy released from the hypocenter. Physically, magnitude is related to frequency. The frequency can obtained from earthquake records in time domain which are converted to frequency domain by Fast Fourier Transform method. Earthquake data is obtained from IRIS and uses 89 events with magnitude of 4-9. In Aceh, Yogyakarta, Lombok, and Palu that relatioship between magnitude and frequency are y = -0.053x + 6.2999, y = 0.018x + 4.082, y = -0.0496x + 6.455, and y = -0.0192x + 5.3129. In this research, it can be concluded that the bigger magnitude of the earthquake has smaller frequency. The potential magnitude that appear if the seismicity are low in Aceh, Yogyakarta, Lombok, and Palu are 6.2, 4, 6.4, and 5.3.

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