Article Per Year (5 Year)
p-Index From 2020 - 2025
0.444
P-Index
This Author published in this journals
All Journal Majalah Ilmiah Teknologi Elektro Rekayasa Sipil Jurnal Geosaintek Majalah Ilmiah Teknologi Elektro
Dwa Desa Warnana
Unknown Affiliation
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering

Published : 5 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 5 Documents
Search

 1 
MITIGASI BENCANA BERDASARKAN NILAI SHEAR STRAIN TANAH AKIBAT GEMPA BUMI PADA TEMPAT PEMBUANGAN AKHIR (TPA) NGIPIK, GRESIK Siti Nurlita Fitri; Ria Asih Aryani Soemitro; Dwa Desa Warnana
Rekayasa Sipil Vol 14, No 3 (2020)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2020.014.03.9

Abstract

Ngipik Landfill located in Gresik, East Java has a several active fault. As a result, this area has high possibility as an earthquake prone area. In addition, It has not prevent’s layer under the bottom of the construction to control the leachate’s spread. This study aim to analyze the earthquake hazard map for the region based on the values of ground shear strain. The data was conducted by microtremor measurement and Plaxis modeling. The result of this study shows the shear strain value range between 3.5 x 10-3 to 12.5 x 10-3. The highest value is around the east and west-north area and indicated the high risk of damage under ground motion. The output of the research must consider as preliminary site mitigation of  Ngipik Landfill.
PENGUKURAN RESISTIVITAS PADA DAERAH DUGAAN SUMBER PENYEBAB ANOMALI GEOMAGNETIK DI PULAU LOMBOK NTB Bulkis Kanata; Teti Zubaidah; Widya Utama; Dwa Desa Warnana; Cipta Ramadani
Jurnal Teknologi Elektro Vol 8 No 1 (2009): (January - June) Majalah Ilmiah Teknologi Elektro
Publisher : Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (204.604 KB)

Abstract

possibilities of the source of geomagnetic anomaly in Lombok Island, i.e. a specific local structure composed by a quite large magnetic body or a local fault in this region that could be associated with a source of seismic hazard (especially earthquakes). An interesting profile could be estimated lie around the minimum geomagnetic anomaly (8045’36”S, 11601’48”E) to the maximum one (8043’48”S, 1160 5’24” E). Understanding the corresponding structure on that profile is very important - related to the possibility of the source of geomagnetic anomaly in Lombok Island - in order to get further information about potentially local fault in this region as a source of earthquakes hazard. Geoelectric method with vertical electrical sounding (VES) configuration have been applied in this profile, on three VES points (i.e. one point between the minimum and the maximum geomagnetic anomaly (X1: 8046’42.9”S, 116004’07.7”E), and two other points outside (X2: 8046’03.3”S, 115058’39.9”E; which is on negative anomaly area) and (X3: 8042’11.6”S, 116008’27.2”E; which is on positive anomaly area). The potency of X1 as a critical zone has been shown, with the existence of resistivity contrast in this area, which its resistivity value between X2 (very high resistivity; r >25,000 Wm) and X3 (very low resistivity; ; r >1 W m). This results lead to the potentially local fault in this region as a source of earthquakes hazard.
Analisis Inversi 2D Metode Occam Untuk Memodelkan Resistivitas Bawah Permukaan Data Magnetotellurik Satrio Budiraharjo; Widya Utama; Dwa Desa Warnana; Arif Darmawan
Jurnal Geosaintek Vol 3, No 1 (2017)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25023659.v3i1.2929

Abstract

Program pengolahan data metode Magnetotellurik dikalangan mahasiswa, khususnya inversi2D sangat jarang ditemukan. Pemodelan struktur resistivitas bawah permukaan menggunakan dataMagnetotellurik umumnya saat ini menggunakan inversi 1D yang kemudian dilakukan pseudo-sectionterhadap resistivitas vertikal untuk menampilkan model dalam bentuk 2D. Untuk medium 2D solusipemodelannya menjadi lebih kompleks, dikarenakan parameter resistivitas tidak hanya bervariasiterhadap kedalaman namun juga dalam dimensi lateral. Program TGMT2D yang dibuat, menggunakanmetode inversi Occam yang ditest dengan model sintetik hasil forward modelling, dengan resistivitaslapisan pertama 50 ohm.m, lapisan kedua 1ohm.m, lapisan ketiga 100 ohm.m dan lapisan keempat 500ohm.m. Dari hasil inversi yang dilakukan didapatkan hasil yang mirip antara struktur resistivitas bawahpermukkan dengan model sintetik hingga kedalaman 4000m dari total kedalaman 6000m, dengan nilairesistivitas lapisan pertama 32-79 ohm.m, lapisan kedua 1.2-3.9 ohm.m, lapisan ketiga 2.5-79Ohm.m,dan lapisan keempat dengan 32-200 ohm.m.
ANALISIS SEISMIK ATRIBUT UNTUK IDENTIFIKASI PERSEBARAN RESERVOIR BATUPASIR PADA FORMASI BALIKPAPAN, LAPANGAN V Nisya Aviani; Dwa Desa Warnana; Eki Komara; Ramsyi Faiz Afdhal
Jurnal Geosaintek Vol 8, No 2 (2022)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25023659.v8i2.13619

Abstract

Lapangan V terletak di Formasi Balikpapan, Cekungan Kutai, Kota Balikpapan, Kalimantan Timur sebagai salah satu bukti keekonomisan reservoir Cekungan Kutai. Fokus area penelitian pada zona utama (VMZ) dipilih karena pada penelitian internal yang tidak dipublikasikan oleh Pertamina Hulu Mahakam (PHM), zona utama (VMZ) memiliki dominasi sedimen endapan delta dan reservoir utama berupa fasies mouth bar dan fasies distributary channel, dimana fasies distributary channel berupa batupasir. Zona Utama (VMZ) pada strata Miosen Tengah yang digunakan ialah Horizon SU4 - SU5e yang didalamnya terdapat horizon 4a, 4e, 4h-1, 5a dan 5e dengan dominasi batupasir dan batubara. Untuk memetakan persebaran reservoir batupasir pada Horizon SU4 - SU5e menggunakan analisis seismik atribut, yaitu atribut amplitudo RMS, dan amplitudo sweetness dengan menggunakan data seismik 3D PSTM, borehole checkshot, well log dan lima sumur sebagai kontrol. Peta waktu struktur dibuat dengan cara interpolasi konvergen gridding dari hasil picking horizon seismik. Analisis menggunakan atribut amplitudo RMS, dan amplitudo sweetness karena hampir seluruh marker horizon yang digunakan, yaitu SU4 - SU5e mempertimbangkan seluruh data yang dimiliki baik positif maupun negatif. Berdasarkan hasil analisis atribut seismik menunjukkan bahwa atribut amplitudo RMS, dan amplitudo sweetness tidak memiliki perbedaan yang signifikan dalam mengidentifikasi persebaran batupasir reservoir pada SU4 - SU5e. Namun, atribut sweetness memiliki nilai korelasi paling baik, yaitu 0.861 dibandingkan atribut RMS. Hal tersebut membuktikan bahwa atribut sweetness memperlihatkan keberadaan anomali reservoir yang lebih baik. Pola persebaran batupasir dominan di bagian timur laut-tenggara dengan dominasi channel berada pada dim area. 
PENGUKURAN RESISTIVITAS PADA DAERAH DUGAAN SUMBER PENYEBAB ANOMALI GEOMAGNETIK DI PULAU LOMBOK NTB Bulkis Kanata; Teti Zubaidah; Widya Utama; Dwa Desa Warnana; Cipta Ramadani
Jurnal Teknologi Elektro Vol 8 No 1 (2009): (January - June) Majalah Ilmiah Teknologi Elektro
Publisher : Program Studi Magister Teknik Elektro Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

possibilities of the source of geomagnetic anomaly in Lombok Island, i.e. a specific local structure composed by a quite large magnetic body or a local fault in this region that could be associated with a source of seismic hazard (especially earthquakes). An interesting profile could be estimated lie around the minimum geomagnetic anomaly (8045’36”S, 11601’48”E) to the maximum one (8043’48”S, 1160 5’24” E). Understanding the corresponding structure on that profile is very important - related to the possibility of the source of geomagnetic anomaly in Lombok Island - in order to get further information about potentially local fault in this region as a source of earthquakes hazard. Geoelectric method with vertical electrical sounding (VES) configuration have been applied in this profile, on three VES points (i.e. one point between the minimum and the maximum geomagnetic anomaly (X1: 8046’42.9”S, 116004’07.7”E), and two other points outside (X2: 8046’03.3”S, 115058’39.9”E; which is on negative anomaly area) and (X3: 8042’11.6”S, 116008’27.2”E; which is on positive anomaly area). The potency of X1 as a critical zone has been shown, with the existence of resistivity contrast in this area, which its resistivity value between X2 (very high resistivity; r >25,000 Wm) and X3 (very low resistivity; ; r >1 W m). This results lead to the potentially local fault in this region as a source of earthquakes hazard.
Co-Authors Budy Wiryawan Bulkis Kanata Cipta Ramadani Eki Komara Nisya Aviani Ramsyi Faiz Afdhal Ria Asih Aryani Soemitro Satrio Budiraharjo Siti Nurlita Fitri Teti Zubaidah Widya Utama