Danny Hilman Natawidjaya

Danny Hilman Natawidjaja is an Indonesian geologist specializing in earthquake geology , geotectonics, and seismic hazard assessment. As a distinguished research professor at the National Research and Innovation Agency (BRIN), formerly the Indonesian Institute of Sciences (LIPI), he has conducted extensive studies on subduction zone tectonics and paleoseismology, contributing to predictions of seismic risks along Indonesia's Sunda Trench since 2000. Natawidjaja chairs the Geology Working Group of Indonesia's National Earthquake Study Center, aiding revisions to the country's seismic hazard maps. His work extends to geo-archaeology, where he led investigations at Gunung Padang proposing artificial megalithic construction dating to approximately 25,000 years ago based on geophysical surveys and radiocarbon dating , claims that ignited debate over ancient civilizations but resulted in the retraction of the primary publication due to errors in sample analysis , such as dating nearby soil rather than directly associated organic material.

Danny Hilman Natawidjaja received his Bachelor of Science degree in Geology from Institut Teknologi Bandung in Indonesia in 1984.

He pursued postgraduate studies abroad, earning a Master of Science with honors in Geology from the University of Auckland in New Zealand in 1992.

Natawidjaja completed a PhD in Geology at the California Institute of Technology in 1997, focusing his dissertation on the neotectonics of the Sumatran fault system and paleogeodesy of the Sumatran subduction zone, which involved analysis of fault kinematics, slip rates, and vertical deformation records from coral microatolls.

Danny Hilman Natawidjaja has held key positions within Indonesia 's national research framework, primarily at the Indonesian Institute of Sciences (LIPI) and its successor, the National Research and Innovation Agency (BRIN). Since the early 1990s, he has focused on active fault and neotectonics studies in Indonesia , establishing himself as a core researcher in geological hazards. In 2000, Natawidjaja initiated and oversaw the paleoseismology laboratory at LIPI, advancing capabilities in earthquake paleoseismology and related fieldwork.

At LIPI, Natawidjaja served as a principal investigator in the Research Center for Geotechnology, contributing to seismic hazard assessments and tectonic mapping projects. His roles emphasized interdisciplinary geoscience, including collaborations on subduction zone dynamics and fault trenching. Following the 2021 reorganization of Indonesian research institutions, LIPI merged into BRIN, where Natawidjaja continued his work at the Research Center for Natural Disasters .

Currently, Natawidjaja holds the position of Distinguished Research Professor in Geology at BRIN, a title recognizing his leadership in earthquake geology and geo-archaeology. This role involves directing research on seismic risks, paleoseismology, and innovative geophysical prospecting methods applied to both natural hazards and archaeological sites. His tenure at BRIN builds on decades of institutional expertise, prioritizing empirical data from Indonesian tectonics to inform disaster mitigation strategies.

Danny Hilman Natawidjaja's research in earthquake geology and tectonics primarily examines the active deformation processes along Indonesia's major fault systems and subduction zones, with a focus on the Sumatran Fault Zone (SFZ) and the Sunda megathrust. His work integrates field mapping, geodetic measurements, and paleoseismic indicators to quantify slip rates, fault segmentation, and recurrence intervals of large earthquakes. This approach has been instrumental in elucidating the kinematics of oblique subduction in Sumatra , where the Australian plate converges with Sunda at approximately 60 mm/year, partitioning into trench-normal subduction and strike-slip motion along the SFZ.