cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Solih Alfiandy
Contact Email
solihalfiandy@gmail.com
Phone
+6281298885453
Journal Mail Official
buletingawbariri@gmail.com
Editorial Address
Jl. Sapta Marga No.1, Birobuli Utara, Kec. Palu Selatan, Kota Palu, 94231, Provinsi Sulawesi Tengah
Location
Kota palu,
Sulawesi tengah
INDONESIA
Buletin GAW Bariri ( BGB)
Published by Stasiun Pemantau Atmosfer Global Lore Lindu Bariri
ISSN : 27217752     EISSN : 27219704     DOI : https://doi.org/10.31172/bgb.v3i1
Core Subject : Science, Agriculture, Social,
Agriculture, Biological Sciences & Forestry Astronomy Computer Science & IT Earth & Planetary Sciences Environmental Science
Buletin GAW Bariri (BGB) merupakan buletin karya tulis ilmiah yang diterbitkan oleh Stasiun Pemantau Atmosfer Global Lore Lindu Bariri - Palu BMKG sebagai sarana publikasi hasil penelitian dan kajian di bidang Meteorologi, Klimatologi, Kualitas Udara, dan Geofisika (MKKuG), serta Lingkungan.
Arjuna Subject : Ilmu Bumi dan Planet (semua kategori) - Ilmu Bumi dan Planet (Lain-Lain)
Articles 47 Documents
 1   2   3   4   5 
Pemanfaatan Data Pengamatan Pilot Ballon untuk Analisis Kondisi Atmosfer sebelum Terjadinya Hujan Lebat di Wilayah Samarinda (Studi Kasus 2015 – 2022) Alhadid, Bai'at
Buletin GAW Bariri (BGB) Vol 5 No 1 (2024): BULETIN GAW BARIRI
Publisher : Stasiun Pemantau Atmosfer Global Lore Lindu Bariri - Palu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31172/bgb.v5i1.115

Abstract

Heavy rain is a type of extreme weather that is generally caused by Cumulonimbus clouds. Heavy rains occur quite frequently in Indonesia, especially in Samarinda during 2015 – 2022. There has been quite a lot of research on heavy rain. Another approach that can be used for research on heavy rain is upper air observation data. From that data, air movement and atmospheric lability can be determined. One of the instruments used for upper air observations is the Pilot Balloon (Pibal). In addition, not enough utilization of Pibal observation data has been carried out. Therefore, this research will utilize Pibal observation data to analyze atmospheric conditions before heavy rains in Samarinda during 2015 – 2022. Pibal observation data is processed using RAOB 5.7, so that air movement and atmospheric lability can be determined (850 mb wind speed, Bulk Richardson Number (BRN) Shear, and Storm Relative Helicity (SRH)). The results of this study indicate that before heavy rain occurs, air movement from the surface layer to 3 km generally moves clockwise, which indicates convective activity that can support cloud formation and rain. However, the atmosphereic lability values observed before the occurrence of heavy rains are generally quite low. Only one incident (K10) showed that the atmospheric lability was high that can increase that convective activity and the formation of Cumulonimbus clouds. On K10 there is an increase windspeed on the 850 mb which reached 32 knots, high BRN Shear and SRH values, reaching 26 m2/ s2 dan 226 m2/ s2.
Dampak La Nina pada Produksi dan Uji Banding Waktu Pangkas Vegetatif Tanaman Anggur (Vitis Vinifera) di Kota Palu Ambinari Rachmi Putri; Kurdiyan Kurdiyan; Abd Syakur; Muhardi Muhardi
Buletin GAW Bariri (BGB) Vol 4 No 2 (2023): BULETIN GAW BARIRI
Publisher : Stasiun Pemantau Atmosfer Global Lore Lindu Bariri - Palu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31172/bgb.v4i2.116

Abstract

Palu City, as a major grape – producing center, faced significant challenges due to the La Nina weather disturbance in mid – 2020, resulting in a decline in grape production. This research explores the impact of rainfall during La Nina on grape harvests and evaluates the differences in outcomes between plants pruned on December 1, 2020, and December 11, 2020. The study utilizes descriptive analysis and comparative testing (T – test) with two early vegetative pruning treatments on different dates. The results show a significant increase in rainfall in September 2020 during La Nina, leading to a decrease in grape production. However, there is no significant difference in the growth and yield of grape fruits between plants pruned on December 1, 2020, and December 11, 2020.
Pola Kejadian Upwelling dalam Fishing Map and Calender (FISMAC) di Laut Banda Lestari, Rizka Erwin
Buletin GAW Bariri (BGB) Vol 5 No 1 (2024): BULETIN GAW BARIRI
Publisher : Stasiun Pemantau Atmosfer Global Lore Lindu Bariri - Palu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31172/bgb.v5i1.118

Abstract

The Banda Sea is one of the fertile waters and has the potential for fisheries and is the largest fishing area in Indonesia. Apart from that, the Banda Sea has very complex seabed topography and is crossed by the Indonesian Cross Current (Arlindo) route from the Pacific Ocean, which adds to the complexity of conditions in the Banda Sea, thereby increasing the potential for upwelling in this region. The aim of this research is to determine the characteristics of upwelling event patterns in the Banda Sea for Fishing Map and Calender (FISMAC) mapping. The data used in this research includes surface wind data, sea surface temperature and chlorophyll – a data for 2009 – 2019. Based on the analysis, this research shows that the upwelling phenomenon in the Banda Sea occurs from June to October where sea surface temperatures experience a decrease and when the easterly wind strengthens (high wind speed). The formation of cyclonic wind patterns has no effect on upwelling events. The upwelling process in the Banda Sea occurs on the southern coast, namely Buru Island, Ambon and Seram. Apart from that, the upwelling phenomenon causes an abundant distribution of chlorophyll – a from June to September. This could be a trigger for the distribution of fish in the area. The upwelling phenomenon reaches its peak in August. In the Fishing Map and Calendar (FISMAC) mapping, it can be seen that there is an increase in potential fishing zones in the Banda Sea from June to October.
Analisis Mikrotremor untuk Bangunan X, Y dan Z di Wilayah Jakarta dan Sekitarnya dengan Menggunakan Metode Floor Spectral Ratio (FSR) dan Random Decrement Method (RDM) Rahman, Aditya Setyo; Faisal, Muh Dede; Efendi, Hasan Arif
Buletin GAW Bariri (BGB) Vol 5 No 1 (2024): BULETIN GAW BARIRI
Publisher : Stasiun Pemantau Atmosfer Global Lore Lindu Bariri - Palu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31172/bgb.v5i1.119

Abstract

Jakarta merupakan salah satu kota yang paling pesat pembangunannya di Indonesia dan banyak terdapat gedung – gedung bertingkat yang dibangun. Gedung – gedung ini rawan terjadi kerusakan akibat guncangan gempabumi yang terjadi, di mana kerusakan bangunan dengan skala besar dapat menyebabkan jatuhnya korban jiwa. Analisis mikrotremor untuk bangunan bertingkat tinggi dilakukan dengan tujuan untuk mengetahui karakterisktik dari suatu bangunan dengan mengetahui periode dominan, frekuensi natural, amplifikasi, Damping Ratio dan tingkat kekuatan bangunan serta melakukan analisis terhadap bangunan tersebut. Analisis mikrotremor yang dilakukan terhadap bangunan X, Y, dan Z di wilayah Jakarta dan sekitarnya menggunakan metode Floor Spectral Ratio (FSR) dan Random Decrement Method (RDM) serta diolah menggunakan software geopsy. Hasil penelitian menunjukkan bahwa semakin kecil frekuensi natural yang dimiliki suatu gedung, maka semakin besar amplifikasinya. Pada lokasi yang berbeda, kegunaan dari bangunan serta usia dari suatu gedung dapat menjadi faktor penentu karakterisktik suatu bangunan baik itu dari frekuensi natural, amplifikasi, indeks kerentanan maupun Damping Ratio yang dimiliki.  Analisis FSR di dapatkan hasil untuk dari ketiga gedung memiliki range frekuensi antara 0.63Hz – 0.91Hz, amplifikasi antara 1.72 – 10.31 dan indeks kerentanan dari 109.08 – 562.93, serta nilai RDM yang bernilai 0.95Hz – 1.10Hz. Untuk frekuensi naturalnya dan memiliki Damping Ratio antara 0.54 – 2.32%.
Pemanfaatan Algoritma Decision Tree C4.5 dalam Memprakirakan Hujan di Stasiun Meteorologi Kelas I Sultan Hasanuddin Prasetiyo, Adi
Buletin GAW Bariri (BGB) Vol 5 No 1 (2024): BULETIN GAW BARIRI
Publisher : Stasiun Pemantau Atmosfer Global Lore Lindu Bariri - Palu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31172/bgb.v5i1.120

Abstract

Rain can have various impacts on human life, one of which is the impact on the world of aviation. To minimize the impact caused by rain in the world of aviation, rain forecasts are needed to facilitate operational activities at an airport, including Sultan Hasanuddin International Airport, which is one of the busiest airports in Indonesia. In forecasting rain, generally the data used is data that influences the formation of rain, such as data related to the amount of water vapor (precipitable water) and wind (relative vorticity and divergence). Even though the data used in forecasting rain is correlated with the formation of rain, there is the potential for poor forecast accuracy due to non – continuous supporting data for predicted rain events because atmospheric conditions are very complex and can change rapidly. To minimize rain forecasts with poor accuracy, a method is needed that can process non – continuous data regarding future rain events well, one of which is using the Decision Tree C4.5 algorithm. Decision Tree C4.5 is a machine learning algorithm that involves selecting the best features at each step so that it has the potential to produce good forecasts. In this study, the forecast results for a year were dominated by 2590 no rain events, while the total number of rain forecasts was 330 events. Accuracy of monthly forecasts was found to range from 64.92% to 100%, where if the number of correct and incorrect forecasts for each month were combined, the forecast accuracy for a year was 84%, where this accuracy could be said to be very good.
Identifikasi Klasifikasi Jenis Tanah Berdasarkan Nilai Kecepatan Gelombang Geser Vs30 di Daerah Bekasi Rahman, Aditya Setyo; Sutiyono, Sutiyono; Cindiwati, Cindiwati; Alfiandy, Solih
Buletin GAW Bariri (BGB) Vol 5 No 2 (2024): BULETIN GAW BARIRI
Publisher : Stasiun Pemantau Atmosfer Global Lore Lindu Bariri - Palu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31172/bgb.v5i2.121

Abstract

The complex geological and tectonic conditions of Bekasi are interesting to study the soil layers for sustainable development. This research was conducted to analyze soil types in the Bekasi area based on the USGS topographic Vs30 value. The data used were 613 research location points with a distance of approximately 1 km. The results showed that the Vs30 value in the Bekasi area ranged from 125.5479965 m/s to 316.0310059 m/s. Based on SNI 1726:2019, the entire Bekasi area is classified as soft to medium soil types. The majority of all sub-districts in Bekasi have a soft soil type classification, such as in the areas of Muaragembong, Cabangbungin, Babelan, Tarumajaya, Tambelang, Sukatani, Pebayuran, Kedung Waringin, and parts of Tambun. The medium soil type classification is in the southern part of Tambun sub-district, a small part in the southern part of Tambelang and Sukatani sub-districts, and a small part in the north and south of Muaragembong sub – district.
Analisis Potensi Pergerakan Tanah Berdasarkan Ground Shear Strain Untuk Wilayah Bekasi Rahman, Aditya Setyo; Sutiyono, Sutiyono; Wardaningsih, Kuurnia; Istofiyah, Istofiyah; Cindiwati, Cindiwati; Alfiandy, Solih
Buletin GAW Bariri (BGB) Vol 5 No 2 (2024): BULETIN GAW BARIRI
Publisher : Stasiun Pemantau Atmosfer Global Lore Lindu Bariri - Palu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31172/bgb.v5i2.122

Abstract

This study analyzes the Ground Shear Strain (GSS) values and predicts earthquake vibration phenomena in the Bekasi area. The results show that the GSS values are relatively low (0.14 - 0.20), indicating a low level of vulnerability to earthquake shaking. At PGA 0.22 - 0.302 g, it is predicted that only the wave vibration phenomenon will occur (ground vibration is felt, not damaging). Despite the low vulnerability level, it is important to remain vigilant and carry out earthquake mitigation, such as building earthquake-resistant structures and preparing evacuation plans.
Identifikasi Potensi Turbelensi di Wilayah Penerbangan Indonesia Berdasarkan Analisis Richardson Number (Ri) Menggunakan Data ECMWF ERA5 (Studi Kasus Tahun 2022) Riswanto, Rafli Muhammad Haris; Mustofa, Musa Ali; Saragih, Immanuel Jhonson Arizona
Buletin GAW Bariri (BGB) Vol 5 No 2 (2024): BULETIN GAW BARIRI
Publisher : Stasiun Pemantau Atmosfer Global Lore Lindu Bariri - Palu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31172/bgb.v5i2.126

Abstract

Turbulence is an atmospheric phenomenom that that significanly impacts aviation safety, particularly in Indonesia, which features complex tropical weather conditions and dense air traffic. The identification and mapping of turbulence potential are crucial for improving aviation safety and operational efficiency. This study aims to map the turbulence potential in Indonesian flight regions using the Richardson Number (Ri) for the year 2022. The data utilized in this research are sourced from the European Centre for Medium - Range Weather Forecasts (ECMWF) Reanalysis Version 5 (ERA5) and radiosonde observation. ERA5 data were employed to calculated Ri, which can detect turbulence potential based on meteorological parameters such as wind speed and temperature. Ri calculations were aggregated monthly and annually for temporal and spatial analysis. Validation was conducted using radiosone data to verify turbulence events and meteorological parameters across various atmospheric levels. Spatial observations across Indonesia revealed significant turbulence events on January 18, July 2, and December 26, 2022, with notable daily fluctuations. Geographically, regions along the sothern coasts of Java and Sumatera, as well as certain areas in Kalimantan and Papua, exhibited higher frequencies of turbulence. These patterns are influenced by seasonal weather condition and complex local geopraphical features. Data validation demonstrated good agreement between ERA5 data and radiosonde measurements for temperature parameters, although significant differences were found in the zonal and meridional wind components. This indicates that the reialbility of the generated turbulence potential maps could be enhanced by integratting local data and further refining validation methods for wind components. These findings highlight the importance of ultilizing accurate local data to effectively predict and mitigate the impacts of turbulence on aviation in Indonesia
Analisis Arah dan Kecepatan Angin Permukaan Menggunakan Digaram Wind Rose di Bandara Internasional Sultan Hasanuddin Prasetiyo, Adi
Buletin GAW Bariri (BGB) Vol 5 No 2 (2024): BULETIN GAW BARIRI
Publisher : Stasiun Pemantau Atmosfer Global Lore Lindu Bariri - Palu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31172/bgb.v5i2.133

Abstract

Sultan Hasanuddin International Airport is situated among hills and lowlands, resulting in highly variable wind patterns. In aviation operations, winds are categorized into three types: headwind, tailwind, and crosswind. The most hazardous for flight operations are tailwinds and crosswinds exceeding 10 knots. To ensure flight safety at Sultan Hasanuddin International Airport, it is essential to understand the patterns of wind direction and speed, which can be analyzed using a wind rose diagram. The data used in this study includes wind direction and speed measurements from 2014 to 2023 obtained from METAR (Meteorological Aerodrome Report) at the Sultan Hasanuddin Class I Meteorological Station. The results indicate that the dominant wind direction from 2014 to 2023 at Sultan Hasanuddin International Airport is from the east (67.5°  –  112.5°), with the highest wind speed recorded during this period being ≥ 21.58 knots. Crosswind or aligned wind conditions with runways 03 – 21 and 13 – 31 still show wind speeds exceeding 10 knots, which poses a potential hazard of crosswinds or tailwinds for aircraft.
Pengaruh Madden Julian Oscillation (MJO) terhadap Sifat Hujan Tahunan 1990 – 2020 di 2X11 Kayu Tanam Sumatera Barat Pancariniwati, Sri; Fadila, Riska; Melinda, Shelin
Buletin GAW Bariri (BGB) Vol 5 No 2 (2024): BULETIN GAW BARIRI
Publisher : Stasiun Pemantau Atmosfer Global Lore Lindu Bariri - Palu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31172/bgb.v5i2.134

Abstract

Among the various atmospheric dynamics phenomena, there is an inter – seasonal phenomenon that has a major influence on rainfall variability in Indonesia, namely the Madden Julian Oscillation (MJO). In general, increased rainfall in Indonesia, especially West Sumatra, occurs when the MJO phase is active. This study will discuss the influence of the MJO on rainfall conditions in the 2x11 Kayu Tanam area which is reviewed from its nature in 4 Phases and 8 Phases. The results of the study show that the MJO amplitude above 1 indicates the influence of the MJO phase on increasing or decreasing rainfall compared to normal in 2x11 Kayu Tanam. Based on the division of the MJO into 4 phases (phases 2 – 3, 4 – 5, 6 – 7, and 8 – 1), the dominant MJO event that influences the increase in rainfall in 2x11 Kayu Tanam occurs in phase 2 – 3, while the dominant MJO event that influences the decrease in rainfall in 2x11 Kayu Tanam occurs in phase 6 – 7. Meanwhile, based on the division of MJO into 8 phases (1, 2, 3, 4, 5, 6, 7, and 8), the dominant MJO event that influenced the increase in rainfall in 2x11 Kayu Tanam occurred in phase 2, while the dominant MJO event that influenced the decrease in rainfall in 2x11 Kayu Tanam occurred in phase 6.

Page 4 of 5 | Total Record : 47

 1   2   3   4   5 

Filter by Year

2020 2025


Reset
Filter By Issues
All Issue Vol 6 No 1 (2025): BULETIN GAW BARIRI Vol 5 No 2 (2024): BULETIN GAW BARIRI Vol 5 No 1 (2024): BULETIN GAW BARIRI Vol 4 No 2 (2023): BULETIN GAW BARIRI Vol 4 No 1 (2023): BULETIN GAW BARIRI Vol 3 No 2 (2022): BULETIN GAW BARIRI Vol 3 No 1 (2022): BULETIN GAW BARIRI Vol 2 No 2 (2021): BULETIN GAW BARIRI Vol 2 No 1 (2021): BULETIN GAW BARIRI Vol 1 No 2 (2020): BULETIN GAW BARIRI Vol 1 No 1 (2020): BULETIN GAW BARIRI More Issue