A5062311365- Geological and Geophysical Studies
- Geotechnical and construction materials studies
- Landslides and related hazards
- Geophysical and Geoelectrical Methods
- Groundwater and Isotope Geochemistry
- Geotechnical Engineering and Soil Mechanics
- Groundwater and Watershed Analysis
- Flood Risk Assessment and Management
- Geotechnical Engineering and Analysis
- Rock Mechanics and Modeling
- Geotechnical Engineering and Underground Structures
- Water and Land Management
- Geophysics and Gravity Measurements
- Arsenic contamination and mitigation
- Engineering and Technology Innovations
- Seismic Waves and Analysis
- Geotechnical Engineering and Soil Stabilization
- Tree Root and Stability Studies
- Hydrocarbon exploration and reservoir analysis
- Mining Techniques and Economics
- Geological Modeling and Analysis
- Disaster Management and Resilience
- Mine drainage and remediation techniques
- Environmental Engineering and Cultural Studies
- Seismic Performance and Analysis
Universitas Gadjah Mada
2016-2025
ADA University
2012-2025
Tadulako University
2021
WiLAN (Canada)
2019
Nilai University
2018
Universidad Gabriela Mistral
2017
Kyushu University
2008
Abstract. Landslides are one of the most widespread and commonly occurring natural hazards. In regions high vulnerability, these complex hazards can cause significant negative social economic impacts. Considering worldwide susceptibility to landslides, it is necessary establish a standard for early warning systems specific landslide disaster risk reduction. This would provide guidance in conducting detection, prediction, interpretation, response. paper proposes new consisting seven...
Abstract Volcanic aquifers have become valuable resources for providing water to approximately 2.5 million people in the Yogyakarta-Sleman Groundwater Basin, Indonesia. Nevertheless, hydrogeochemical characteristics at basin scale remain poorly understood due complexity of multilayered aquifer systems. This study collected sixty-six groundwater samples during rainy and dry seasons physicochemical analysis geochemical modeling reveal evolution Basin. The results showed that unconfined...
Abstract The 7.5 M w tectonic earthquake that hit Palu City on 28 September 2018 was followed by tsunami and liquefaction, triggered massive mudflows in Balaroa, Petobo, Jono Oge areas. This study focuses the generating factors of liquefaction such as condition soil lithology, depth water table, distance to focal mechanism, thickness soft sediment. Microtremor data, including Horizontal Vertical Spectral Ratio (HVSR), geological condition, borehole were examined conduct analysis. analysis...
Background Palu is a city in Central Sulawesi Province with very high level of seismic activity. The seismicity associated the active movement Koro fault. One most severe events occurred on September 28, 2018, which triggered liquefaction and tsunami. This also related to lithology Palu, consists alluvial deposits predominantly made up sand. Objective study compares excess pore water pressure values analyzed empirically numerically identify potential. It aims provide additional perspectives...
Abstract Palu Bay is a body of water covering the mainland City and Donggala Regency, Central Sulawesi, Indonesia. This phenomenon has made groundwater city’s primary source clean supply, contributing 65.63% total drinking estimated at 2.7 million m 3 . The community uses shallow or deep wells equipped with pumping systems to fulfill daily needs, but some have reported brackish taste in water. Therefore, this research aimed assess possibility seawater intrusion area. It was achieved by...
Abstract The consequences of increased tourism, population growth, and agricultural activities on groundwater resources are becoming increasingly concerning. tourism industry in the Parangtritis Tourism Area has been expanding, leading to a rise number hotels visitors. This along with expanding demand for agriculture, contributed reduction reserves. Overexploitation can result several adverse effects, such as declining water tables deteriorating quality due seawater intrusion. Seawater...
Abstract According to data from the United States Geological Survey (USGS), Manokwari region in West Papua Province experienced a 7.6 Mw earthquake 1944, approximately 5 km City. Potential consequences of such an is liquefaction, which may occur at Relocation Plan Access Road Rendani Airport, characterized by shallow groundwater and loose soil. This study aimed assess distribution Liquefaction Index (LPI) Ground Failure Probability (PG) using Standard Penetration Test (SPT) 18 sampling...
The Parangtritis area is a tourist destination in Yogyakarta, Indonesia, consisting of dunes and plains. One the essential parameters areas provision water sources. increase visits development tourism facilities this have increased groundwater utilization. Therefore, study aims to assess potential seawater intrusion Beach its surroundings, Indonesia. research was carried out by surveying, field measurements, samples test major ions laboratory. Indications are based on TDS values, Cl-,...
The groundwater quality in Wates coastal area is generally a good category but there are high salinity values at some locations. chemical of from place to different. difference water major problem the study area. A total 27 samples were collected August, 2017. Geochemical signatures used analyze ionic concentrations groundwater, identify dominant hydrogeochemical processes, and determine relationship between flow spatial distribution types. Hierarchical Cluster analysis Schoeller diagram,...
In this study, 8 array microtremor measurements have performed in Palu City, Indonesia for S-wave velocity profiles, which will be used seismic hazard mapping. Four accelerometers were each observation site. One was installed at a center of the circle with radius, r. Other three arranged on shape regular triangle. Sequential observations conducted times by changing radius; r=3, 10 and 30 meters. The ground profile estimated means dispersion curves obtained using Spatial Autocorrelation...
The mapping of soil movement was examined by comparing an extension the deterministic Soil Stability Index Mapping (SINMAP) method, and overlay method with trigger parameters movement. SINMAP model used in form cohesion value (c), internal friction angle (φ), hydraulic conductivity (ks) for prediction based on factor safety (FS), while indirect a literature review field observations. weightings assessments were natural physical aspects: (1) slope inclination = 30%; (2) rock weathering 15%;...
Water demand in the world increases rapidly every year, especially urban areas due to population growth and improved economic conditions. The largest freshwater source on earth is groundwater that can be utilized easily obtained. However, number of resources very dynamic, depending recharge discharge, including extraction. Increasing abstraction will cause a decline level seawater intrusion coastal area. Groundwater fluctuation trends used estimate for optimum utilization. Therefore, this...
A permeable reactive barriers (PRBs) column test was carried out to remove arsenic (As) and manganese (Mn) from groundwater using zero valent iron (ZVI), sheep manure, compost woodchips as materials. Arsenic mainly immobilized through sorption co-precipitation with iron-bearing minerals, also possibly precipitation FeAsO4. The presence of sulfate-reducing bacteria (SRB) in the inoculated suggested by decrease sulfate concentrations increase δ34S effluent. more effective immobilize than...
This paper highlights the importance of integrating social and technical approaches (which is so-called "hybrid socio-technical approach") as one innovative strategic program with respect to disaster risk reduction.Such a mainly based on multi-disciplinary action research support community empowerment through public education.The approach was conducted for geological geotechnical investigation analyze predict susceptibility levels prone area, well develop an appropriate technology hazard...
One important part of rock mass investigation is the geomechanical assessment in terms classification systems. Rock one themost efficient methods mechanics to provide a basic understanding masscharacterization. properties can be determined by seismic refraction surveyas an indirect geophysical assessment. In this study, P-wave velocity from seismicrefraction was compared with Quality Designation (RQD) boreholes.The empirical correlation between RQD and found usingthe linear regression...