David Prambudi Sahara

2025

Application of Machine Learning in Indonesia’s Seismic Processing System.

Strengthening Disaster Technology Industry: A Hilirization Model for AI-Based Early Warning System (EWS) Integrating Seismic and GNSS Data.

Determination of 3-D Seismic Wave Velocity Structure (Vp & Vs) in the Sunda Arc Using a Cross-Correlated Signal Relocated Earthquake Hypocenter Catalog.

Equity2025 – Development of a High-Resolution Earthquake Catalog through Integration of Artificial Intelligence and Robust Earthquake Processing Technology.

GeoMecca: Industry-Ready Machine Learning Innovation for Geothermal and Underground Mine Microseismic Processing.

Equity2025 – “Seismometer Goes to School” Program: Earthquake Hazard Education and Mitigation for High School Students in West Java.

2024

Microseismic monitoring at the Patuha Field.

Development of an Earthquake Early Warning (EEW) System in Indonesia Utilizing Deep Learning Technology.

Development of a Machine Learning Model for Monitoring the Sustainability Level of Global Mining Activities in Tropical Forest Regions.

Integrated Geophysical Survey.

System Processing Development of InaTEWS Merah Putih (Red and White Indonesian Tsunami Early Warning System).

IMPLEMENTATION OF THE POSTGRADUATE EDUCATION PROGRAM (S3 / PhD) IN GEOPHYSICAL ENGINEERING FOR 2024.

AI-Enhanced Seismic Knowledge Interpretability: Integrating Neural Architecture with Geophysical Insights for Real-Time Early Warning and Post-Event Analysis.

Remanent Magnetic Measurement Testing Activity.

DAPT-Equity2024-WCU@Innovation: Machine Learning Technology for Software Development in Microseismic Data Processing for Geothermal Reservoir and Underground Mine Monitoring.

Community Engagement and Research Book for the Global Geophysics Expertise Group 2024.

2023

IMPLEMENTATION OF THE POSTGRADUATE EDUCATION PROGRAM (S3 / PhD) IN GEOPHYSICAL ENGINEERING FOR 2023.

Implementation of Artificial Intelligence for Improving Earthquake and Tsunami Early Warning Systems with Multi Sensors.

Equipment for Earthquake and Volcanic Activity Surveys Using Seismometers for the Volcanology and Geothermal Laboratory, Geophysical Engineering Program.

Development of Learning Innovation and International Classes Through Digital Learning Materials and Visiting Professors.

Study of Fault Strength on Sulawesi Faults Based on Friction Estimation Using Focal Mechanism Data.

Compilation of an In-Situ Stress Map in Eastern Indonesia Using a New Focal Mechanism Catalog from BMKG Data Inversion.

IMPLEMENTATION CONTRACT OF SYSTEM PROCESSING DEVELOPMENT OF INATEWS “MERAH PUTIH”.

2022

Regional in-situ stress mapping in Sulawesi using new focal mechanism data for active inland fault identification.

Quantification of Damage Level in Strong Rock Mass in Block Caving Mining Method Using Microseismic Monitoring and Numerical Modeling.

Development of a Modular System for Rapid and Accurate Source Parameter Determination and Regionalization of Indonesia’s Velocity Model Using Python-Based Machine Learning.

Cave propagation monitoring at the DMLZ underground mine based on seismicity distribution analysis and Time-Lapse Tomography for sustainable underground mining operations.

Book of the Global Geophysics Expertise Group 2022.

Dimensional Correlation and Seismicity Characterization based on Earthquake Data, Active Faults & Horizontal Strain and its relation to Hazard Function in Sumatra Island.

Sensitivity analysis of moment magnitude calculation.

Acquisition of an Earthquake Monitoring System Using the Latest Distributed Acoustic Sensing (DAS) Technology in Lembang and Surroundings.

Improving The Earthquake Resilience of Indonesia’s New Capital City.

International Conference on Geosciences and Earth Resources Engineering (4th ICGERE).

2021

Global Geophysics Book Year 2021.

Bayesian Centroid Moment Tensor Inversion of the 2019 Ambon 6.5 Mw Aftershock Sequence to See Potential Reactivation of Inland Faults on Seram Island and Surroundings.

Seismicity and Ambient Noise Tomography Study of the Lembang Fault Using a Temporary Local ITB Seismic Network and Regional BMKG Stations.

Microzonation Study for Earthquake Risk Reduction in Semarang City, Central Java.

Development of Teaching Materials, Socialization and Earthquake Disaster Mitigation Education with the Sekolah Alam Bandung Partner.

Seminar.

Auto-Classification of Volcano-Tectonic (Vt) Earthquakes Using Machine Learning: Case Study of the 2017 Mount Agung Crisis.

The 3rd International Conference on Geoscience and Earth Resources Engineering.

PPKI – Implementation of Artificial Intelligence for Improving Earthquake and Tsunami Early Warning Systems with Multi Sensors.

2020

Implementation of Artificial Intelligence for Improving Earthquake and Tsunami Early Warning Systems with Multi Sensors.

Seismic Crisis Analysis on Volcanoes as an Eruption Precursor: Case Study of Mount Agung.

3-D High-Resolution Vp, and Vp/Vs Tomographic Structure beneath Mount Agung, Bali using the ITB Seismograph Network.

2018

Determination of In-Situ Stress from Focal Mechanism Solutions Along the Sumatra Fault.

Geomechanics Study in the Case of Hydraulic Stimulation Injection in Geothermal Reservoirs.

• Evidence of a new backthrust fault system from the 2022 southeast Java, Indonesia earthquake sequence: Insights from seismological analysis (2026)
• Modeling cave propagation in deep block caving by incorporating the fracture zone inferred from seismic tomography (2025)
• Stress Inversion and Fault Instability Analysis of Seram-Buru Region (2025)
• Contrasting magmatic structures and tectonic controls from integrated gravity and magnetic data in the Bromo–Tengger–Semeru complex and the Lamongan Volcanic Field, East Java, Indonesia (2025)
• Strain accumulation in the Mentawai Forearc Sliver, Indonesia, inferred from continuous GNSS-derived strain rate (2025)
• Adaptive irregular grid of seismic tomography: a synthetic test (2024)
• Rock solid solutions: Tomographic methods revolutionize identification of rock mass strength in underground mines (2024)
• Seismic source analysis of the destructive earthquake November 21, 2022, Mw 5.6 Cianjur (Indonesia) from relocated aftershock (2024)
• 4D time lapse tomography for monitoring cave propagation and stress distribution in Deep Mill Level Zone (DMLZ) PT Freeport Indonesia (2024)
• Deep learning for real-time P-wave detection: A case study in Indonesia’s earthquake early warning system (2024)
• Performance test of pilot Earthquake Early Warning system in western Java, Indonesia (2024)
• PhaseNet Application based on Seismic Event Recording and Waveform Characteristics for Diverse Seismic Regions in Indonesia (2024)
• Evaluation of Station Performance of the Indonesian Seismic Network Using the Primary Location Parameter (2024)
• Mantle Flow Induced by the Interplay of Downgoing Slabs Revealed by Seismic Anisotropy Beneath the Sula Block in Eastern Indonesia (2024)
• A new moment tensor catalogue of light to moderate earthquakes in Palu-Koro and Matano faults, Sulawesi, based on the regional network in Indonesia: Fault analysis and insight (2024)
• A Laboratory Measurements for Quantification of the Effect of Fracture Frequency on Ultrasonic Velocity and Rock Mass Quality (2024)
• New assessment of the probabilistic seismic hazard analysis for the greater Jakarta area, Indonesia (2023)
• Block Caving Mining Method: Transformation and Its Potency in Indonesia (2023)
• Long-Short Rupture Boundary of Coseismic Displacement Estimation Based on 30-Seconds GNSS Observation (2023)
• Crustal Thickness and Vp/Vs Ratio Determination beneath Tangkuban Parahu Volcano, West Java, Indonesia using Receiver Function Analysis (2023)
• Reducing Numerical Dispersion with High-Order Finite Difference to Increase Seismic Wave Energy (2023)
• Seismicity Pattern of the Great Sumatran Fault System from Hypocenter Relocation of Regional Seismic Network (2023)
• Anomaly detection on displacement rates and deformation pattern features using tree-based algorithm in Japan and Indonesia (2023)
• Sensitivity analysis of moment magnitude (Mw) spectral fitting parameters based on orthogonal design: using aftershocks of the 2019 Mw 6.5 Ambon, Indonesia earthquake (2023)
• Double-difference earthquake relocation using waveform cross-correlation in Central and East Java, Indonesia (2023)
• Aftershock study of the 2019 Ambon earthquake using moment tensor inversion: identification of fault reactivation in northern Banda, Indonesia (2023)
• Segmentation of the Sumatran Fault Zone based on spatial variation of b-values (2023)
• Moho Depth Estimation using Receiver Function beneath Mt. Manglayang Area, West Java, Indonesia (2023)
• A previously unidentified fault revealed by the February 25, 2022 (Mw 6.1) Pasaman Earthquake, West Sumatra, Indonesia (2023)
• Stress accumulation and earthquake activity on the Great Sumatran Fault, Indonesia (2023)
• Moment tensor inversion implementation in determining focal mechanism solution of Palu-Koro and Matano fault events: Processing strategy (2023)
• Velocity Changes Associated to the 2019 Ambon 6.5 Mw Earthquake Using Ambient Seismic Noise (2023)
• Microseismic and Focal Mechanism Analyses for Structural Interpretation – Muara Laboh Geothermal Field (2022)
• The Perturbation of Background Stress Field Along Sunda Subduction Margin During 2004 Mw 9.1 Off-Sumatra Earthquake (2022)
• Preliminary Fault Instability Analysis of Mw 6.5 Pidie Jaya, Aceh 2016 Earthquake (Indonesia) (2022)
• Preliminary Result of Microearthquake Monitoring at Namora-I-Langit and Silangkitang, Sarulla, North Sumatra, Indonesia (2022)
• Features Engineering and Features Extraction of Volcano-Tectonic (VT) Earthquake (2022)
• The 3rdInternational Conference on Geoscience and Earth Resources Engineering: Geosciences and Earth Resources Engineering for Sustainable Future (Preface) (2022)
• Refining the Regional Aftershocks Catalog of the Ambon Earthquake Mw 6.5 on 26 September 2019 using manual picking and a non-linear algorithm: Preliminary Result (2022)
• Implications for fault locking south of Jakarta from an investigation of seismic activity along the Baribis fault, northwestern Java, Indonesia (2022)
• Estimation of B-Value Variation as Earthquake Precursor in Java Region with Maximum Likelihood Method (2022)
• Testing the Utilization of a Seismic Network Outside the Main Mining Facility Area for Expanding the Microseismic Monitoring Coverage in a Deep Block Caving (2022)
• Seismic Structure Beneath the Molucca Sea Collision Zone from Travel Time Tomography Based on Local and Regional BMKG Networks (2022)
• Earthquake Early Warning System Using Ncheck and Hard-Shared Orthogonal Multitarget Regression on Deep Learning (2022)
• Seismic Hazard Function Mapping Using Estimated Horizontal Crustal Strain Off West Coast Northern Sumatra (2021)
• Ambient Seismic Noise Cross – Correlation of Ambon Island and Surrounding Area, Eastern Indonesia: Preliminary Result (2021)
• Analysis of Hypocenter Relocation by Using Double Difference Method in a Deep Underground Mining (2021)
• Bayesian Inference of Centroid Moment Tensors of the 2019 Ambon (Mw 6.5) Aftershock Earthquake Sequence, Indonesia: A Preliminary Result (2021)
• Determination of Shear Wave Splitting Parameters in 2018 Lombok Earthquake Using Rotation Correlation Method: Preliminary Result (2021)
• Preliminary study of stress changes evolution on central part of Sumatran Fault influenced by large interplate earthquakes and tectonic stress rates (2021)
• Elastic and Viscoelastic Models of Crust Deformation in Strike-slip Fault (2021)
• Earthquake Swarm Analysis around Mt. Salak, West Java, Indonesia, Using BMKG Data from August 10 to November 24, 2019 (2021)
• Hypocenter Determination of Volcano-Tectonic (VT) Earthquake around Agung Volcano in Period October-December 2017 Using a Non-Linear Location Method: A Preliminary Result (2021)
• Earthquake monitoring of the Baribis Fault near Jakarta, Indonesia, using borehole seismometers (2021)
• Maluku Sea Plate Faulting Regime Analysis: A Preliminary Study (2021)
• 2019 Ambon aftershocks catalogue data compiled using local and regional seismic networks (2021)
• Source mechanism and triggered large aftershocks of the Mw 6.5 Ambon, Indonesia earthquake (2021)
• Multi-Target Regression Using Convolutional Neural Network-Random Forests (CNN-RF) for Early Earthquake Warning System (2021)
• Delineation of sedimentary basin structure beneath the Banyumas Basin, Central Java, Indonesia, using ambient seismic noise tomography (2021)
• Fault Instability and Its Relation to Static Coulomb Failure Stress Change in the 2016 Mw 6.5 Pidie Jaya Earthquake, Aceh, Indonesia (2021)
• Seismic Attenuation Tomography From 2018 Lombok Earthquakes, Indonesia (2021)
• Long and Short Wavelength of Geodetic Strain Rate Tapering Earthquake Potential in Western Java (2021)
• Local earthquake tomography of the source region of the 2018 Lombok earthquake sequence, Indonesia (2021)
• Variations in Forearc Stress and Changes in Principle Stress Orientations Caused by the 2004–2005 Megathrust Earthquakes in Sumatra, Indonesia (2021)
• Travel Time Tomography to Delineate 3-D Regional Seismic Velocity Structure in the Banyumas Basin, Central Java, Indonesia, Using Dense Borehole Seismographic Stations (2021)
• Imaging the Subsurface Structure of Mount Agung in Bali (Indonesia) Using Volcano-Tectonic (VT) Earthquake Tomography (2021)
• Delineation of Upper Crustal Structure Beneath the Island of Lombok, Indonesia, Using Ambient Seismic Noise Tomography (2021)
• Use of Local Seismic Network in Analysis of Volcano-Tectonic (VT) Events Preceding the 2017 Agung Volcano Eruption (Bali, Indonesia) (2021)
• Seismic Hazard Function (SHF) study of coastal sources of Sumatra Island: SHF evaluation of Padang and Bengkulu cities (2020)
• Tomographic Imaging of the Agung-Batur Volcano Complex, Bali, Indonesia, From the Ambient Seismic Noise Field (2020)
• Fault source investigation of the 6 December 2016 M w Mw 6.5 Pidie Jaya, Indonesia, earthquake based on GPS and its implications of the geological survey result (2020)
• Hypocenter and magnitude analysis of aftershocks of the 2018 lombok, indonesia, earthquakes using local seismographic networks (2020)
• Investigation of Hilbert–Huang Transform and Fourier Transform for Horizontal-to-Vertical Spectral Ratio Analysis: Understanding the Shallow Structure in Mataram City, Lombok, Indonesia (2020)
• Analysis of swarm earthquakes around Mt. Agung Bali, Indonesia prior to November 2017 eruption using regional BMKG network (2020)
• Stress drop, earthquake aftershocks and regional stress relation based on synthetic static Coulomb failure stress model (2019)
• Modeling geomechanical responses induced by CO2 injection in CCS pilot project in Gundih field, Indonesia (2019)
• The pattern of local stress heterogeneities along the central part of the Great Sumatran fault: A preliminary result (2019)
• Sensitivity of static Coulomb stress change in relation to source fault geometry and regional stress magnitude: case study of the 2016 Pidie Jaya, Aceh earthquake (Mw = 6.5), Indonesia (2019)
• Utilization of Double-Difference Tomography for Geothermal Exploration: 3D Velocity Structure Interpretation and Fluid Determination (2019)
• Implementation of GMSTech – A New Practical Software for Microseismic Data Processing – For Estimating Event Source Parameters (2019)
• The Physical Mechanisms of Geothermal Reservoir during Hydraulic Injection Through Microearthquake Tomography (2019)
• Preface (2019)
• Coupled Hydraulic and Mechanics Finite Element Modeling of CO2 Injection into a Layered Isotropic Media Using FEHM (2019)
• Determining Source Model and Aftershocks of 2006 Yogyakarta Earthquake, Indonesia using Coulomb Stress Change (2019)
• Impact of the 2004 Sumatra-Andaman Earthquake to the Stress Heterogeneity and Seismicity Pattern in Nothern Sumatra, Indonesia (2019)
• Microseismic analysis to identify stress redistribution and minimize rockburst in dmlz cave abutment, pt freeport Indonesia (2019)
• Modeling the behavior of CO2 injection in a sand reservoir (2019)
• Aftershock location determination of the 27 May 2006, M 6.4 Yogyakarta earthquake using a non-linear algorithm: A preliminary results (2018)
• Preliminary focal mechanism pattern along the central part of the Great Sumatran Fault, Indonesia (2018)
• Stress heterogeneity and its impact on seismicity pattern along the equatorial bifurcation zone of the Great Sumatran Fault, Indonesia (2018)
• Preface (2018)
• Introduction to stress triggers, stress shadows and their implications for seismic hazard in Indonesia (2018)
• Analysis of borehole breakout development using continuum damage mechanics (2017)
• Iterative joint inversion of in-situ stress state along Simeulue-Nias Island (2017)
• Fluid ascent and magma storage beneath Gunung Merapi revealed by multi-scale seismic imaging (2013)