JURNAL ILMIAH MTG最新文献

Analisis Potensi Longsor Menggunakan Metode Weighted Overlay di Daerah Aliran Sungai Progo 用一种固定覆盖的方法分析山体滑坡的可能性

JURNAL ILMIAH MTG Pub Date : 2023-07-23 DOI: 10.31315/jmtg.v14i1.10345

Uli Ulfa

引用次数: 0

Komposisi Maseral Organik Terhadap Karbonisasi Batubara Daerah Muara Singan dan Sekitarnya, Kalimantan Tengah 有机马赛尔对煤炭碳的组成是旋转的入海区，加里曼丹中部

JURNAL ILMIAH MTG Pub Date : 2023-07-18 DOI: 10.31315/jmtg.v14i1.9765

Arica Nefia

引用次数: 0

Kajian Gerakan Massa Berdasarkan Klasifikasi RMR Dan SMR Di Gondoriyo dan sekitarnya, Kecamatan Todanan, Kabupaten Blora Provinsi Jawa Tengah

JURNAL ILMIAH MTG Pub Date : 2023-07-18 DOI: 10.31315/jmtg.v14i1.10181

Anita Dwi Permatasani

引用次数: 0

Geologi Dan Studi Faktor Keamanan Lereng Embung Klonggean Desa Siwalan Kecamatan Sawahan Kabupaten Nganjuk Provinsi Jawa Timur

JURNAL ILMIAH MTG Pub Date : 2023-07-16 DOI: 10.31315/jmtg.v14i1.9767

Ignasius Mahendradewa Adam

引用次数: 0

Geologi dan Pengaruh Nilai Porositas Terhadap Nilai Kuat Geser Batugamping Daerah Argomulyo, Kecamatan Sedayu, Kabupaten Bantul, Daerah Istimewa Yogyakarta

JURNAL ILMIAH MTG Pub Date : 2023-07-13 DOI: 10.31315/jmtg.v14i1.9933

Ade Ratna Wulandari

引用次数: 0

Seismicity Analysis and Velocity Structure of Two-phase Geothermal Field in Southern Bandung 万隆南部两相地热田地震活动性分析及速度结构

JURNAL ILMIAH MTG Pub Date : 2023-07-13 DOI: 10.31315/jmtg.v14i1.9950

Muhamad Firdaus Al Hakim

{"title":"Seismicity Analysis and Velocity Structure of Two-phase Geothermal Field in Southern Bandung","authors":"Muhamad Firdaus Al Hakim","doi":"10.31315/jmtg.v14i1.9950","DOIUrl":"https://doi.org/10.31315/jmtg.v14i1.9950","url":null,"abstract":"Over a duration of six months, we conducted a microearthquake analysis to characterize the subsurface conditions in the two-phase geothermal field located in Southern Bandung. Throughout the study, a total of 754 microearthquake (MEQ) data were recorded from at least 15 monitoring stations. After selection process of the dataset, 362 events were selected based on their azimuthal gap angle being less than 180°. Initially, the earthquake locations were determined using the Geiger method. Subsequently, we updated the hypocenter locations through simultaneous inversion, incorporating 1D velocity structure and 3D tomographic inversion. Our analysis revealed three primary seismicity clusters, which likely correspond to the injection and production activities within the geothermal field. The southern cluster aligns with the injection wells, extending from a depth of 1 km to 8 km, suggesting that the MEQ events were induced by injection activity. In the production area, a higher concentration of events is observed, densely distributed between depths of 1 km and 3 km. We suspect that the third cluster is associated with the development activity of a steam-dominated geothermal field located east of the main field. Notably, low Vp/Vs values near the surface are detected and exhibit increased thickness towards the north. These characteristics are interpreted as indicative of the steam zone, as the anomaly's location aligns closely with the production area. The thickening of the low Vp/Vs zone towards the north suggests the presence of steam as the impact of fluid extraction in the region, leading to a decline in pressure.","PeriodicalId":377085,"journal":{"name":"JURNAL ILMIAH MTG","volume":"150 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123232657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analisis Perbandingan Tipe Fluida Berdasarkan Kandungan Anion Cl-SO4-HCO3 Pada Mataair Panas Candi Gedong Songo Dan Mataair Panas Derekan Kabupaten Semarang Provinsi Jawa Tengah

JURNAL ILMIAH MTG Pub Date : 2023-07-11 DOI: 10.31315/jmtg.v14i1.8358

Nofrohu Retongga

引用次数: 0

Deformation Signals at Mud Volcano in Kambing Island Detected by L-band InSAR l波段InSAR探测坎兵岛泥火山形变信号

JURNAL ILMIAH MTG Pub Date : 2023-04-03 DOI: 10.31315/jmtg.v13i3.9400

{"title":"Deformation Signals at Mud Volcano in Kambing Island Detected by L-band InSAR","authors":"","doi":"10.31315/jmtg.v13i3.9400","DOIUrl":"https://doi.org/10.31315/jmtg.v13i3.9400","url":null,"abstract":"Abstract – Mud volcanoes are generated by fluid and solid material extrusion from their mud reservoir and are predominantly found at convergent plate margins. Kambing Island is a small island in Eastern Timor, Indonesia, where the Australian continental plate collides with the Banda Sea plate. The previous geological study identified active mud volcano on this island, but it is still unclear whether and to what extent they are active. In this work, we attempt to detect surface deformation due to the mud volcanoes activism in Kambing island using the Advanced Land Observing Satellite/ Phased Array Type L-band Synthetic Aperture Radar (ALOS/PALSAR) Interferometry Synthetic Aperture Radar (InSAR). The ALOS/PALSAR datasets consist of 12 ascending and 5 descending Synthetic Aperture Radar (SAR) data from 2006 to 2011. Although the results indicate surface deformation signals are hardly detected in the interferogram pairs due to lost coherence and atmospheric noise, we could highlight the episodic occurrence of surface deformation signals between April and November 2008 reaches 6.4 cm moving away from the satellite line of sight. In the future, to back up our findings, further field surveys or long-term InSAR are needed. Keywords: mud volcano, InSAR, deformation.","PeriodicalId":377085,"journal":{"name":"JURNAL ILMIAH MTG","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117288251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

ANALSIS STRATIGRAFI TERINTEGRASI (BIOSTRATIGRAFI, SEISMIK STRATIGRAFI DAN SIKUEN STRATIGRAFI) DALAM IDENTIFIKASI LINGKUNGAN PENGENDAPAN PADA UMUR OLIGOSEN – SEKARANG UNTUK EKSPLORASI HIDROKARBON SUB-CEKUNGAN PALEMBANG, CEKUNGAN SUMATRA SELATAN 合成层析成像(生物层、地震层和SIKUEN分层法)确定了OLIGOSEN时代的沉积环境——目前用于南苏门答腊盆地帕伦邦亚氢盆地的探索

JURNAL ILMIAH MTG Pub Date : 2023-04-03 DOI: 10.31315/jmtg.v13i3.9402

Wahyuni Annisa Humairoh, M. V. Agustin, Akmaludin Akmaludin

引用次数: 0

The Application of Support Vector Machine to Estimate Synthetic Shear Sonic Log 支持向量机在合成剪切声波测井估计中的应用

JURNAL ILMIAH MTG Pub Date : 2023-04-03 DOI: 10.31315/jmtg.v13i3.9398

Maman Rohaman, M.T., I. S. Winardhi, Y. Rizkianto

{"title":"The Application of Support Vector Machine to Estimate Synthetic Shear Sonic Log","authors":"Maman Rohaman, M.T., I. S. Winardhi, Y. Rizkianto","doi":"10.31315/jmtg.v13i3.9398","DOIUrl":"https://doi.org/10.31315/jmtg.v13i3.9398","url":null,"abstract":"Abstract – Rock physics modelling is commonly applied to characterize the subsurface. Sonic log provides the elastic properties in advanced petrophysics modelling or rock physics modelling. Although it is very important, to obtain shear sonic measurement results is very expensive. Therefore, empirical and artificial intelligence allow some solutions to estimate synthetic shear sonic log. This study applicate PCA as feature selection and SVM as the regressor with TAF as the target interval for well NEGF1P. The results of feature selection are GR, DTC, and MSF log as selected features. GS optimizes the SVM kernel parameter using selected features. The best parameters for each kernel (linear and rbf) and selected feature are the input to estimate synthetic shear sonic log. The estimation result using linear kernel has R2 0.845 and root mean square error (RMSE) 15.132 and using rbf kernel has R2 0.886 and RMSE 12.989. The estimation results construe that rbf kernel estimates the synthetic sonic log with more precision than the linear kernel and indicates the linear relation between the estimated and origin log. The three other wells apply SMV with rbf kernel best parameters and selected features to estimation the synthetic shear sonic in similar interval and younger interval (GUF).","PeriodicalId":377085,"journal":{"name":"JURNAL ILMIAH MTG","volume":"277 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123309098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0