A5035362039- Geology and Paleoclimatology Research
- Methane Hydrates and Related Phenomena
- Geological formations and processes
- Geochemistry and Geologic Mapping
- Hydrocarbon exploration and reservoir analysis
- earthquake and tectonic studies
- Geological Studies and Exploration
- Geological and Geochemical Analysis
- Geological and Geophysical Studies
- Landslides and related hazards
- Archaeology and ancient environmental studies
- Maritime and Coastal Archaeology
- Planetary Science and Exploration
- Heavy metals in environment
- Astro and Planetary Science
- Arctic and Antarctic ice dynamics
- Marine and environmental studies
- Soil Geostatistics and Mapping
- Food Industry and Aquatic Biology
- Isotope Analysis in Ecology
- Coastal wetland ecosystem dynamics
- Geological Formations and Processes Exploration
- Geomagnetism and Paleomagnetism Studies
- Analytical chemistry methods development
- Drilling and Well Engineering
National Taiwan University
2015-2024
National Taiwan University of Science and Technology
2024
National Taiwan Ocean University
2022-2024
Universität Innsbruck
2018-2022
Czech Academy of Sciences, Institute of Geology
2018-2020
Impact responses of granular materials remain poorly understood, posing significant challenges to extraterrestrial exploration activities such as landing, sampling, drilling, and construction. We studied the crater morphology formed in media their behavior on low-velocity impact cratering by integrating three-dimensional surface scanning, machine learning-based classification, x-ray computed tomography (X-CT) imaging. Our laboratory experiments focused lunar (LHS-1 LMS-1) Martian regolith...
Megathrust earthquakes in subduction zones, such as the 2011 Mw 9.1 Tohoku-oki earthquake, are rare but pose significant threats to society. Their long recurrence intervals and limited historical records make reconstructing models challenging. The International Ocean Discovery Program (IODP) Expedition 386 addressed this by recovering over 800 meters of sediment cores from 11 trench-fill basins along Japan Trench, providing a unique opportunity extend paleo-earthquake records. Despite this,...
Pore structure is a critical factor in evaluating the quality of reservoir or cap layer, influencing storage capacity, fluid flow efficiency, and reaction rates. Standard approaches, including Mercury Intrusion Porosimetry (MIP), Gas Pycnometry, Brunauer-Emmett-Teller (BET) analysis, provide essential information; they are limited their ability to capture pore connectivity pathway complexity. X-ray Computed Tomography (CT) provides distinct perspective, enabling three dimensional...
Understanding lithofacies, defined by distinct sedimentary characteristics, is fundamental for deciphering depositional processes and reconstructing paleo-environments. While conventional methods like visual core description grain size analysis are widely employed, they often face challenges, such as incomplete observation of internal structures, discrete sampling intervals, potential subjective interpretations, which may hinder the accuracy lithofacies identification. X-ray Computed...
Abstract X‐ray fluorescence (XRF) core‐scanning is a fast and nondestructive technique to assess elemental variations of unprocessed sediments. However, although the exposure time XRF‐scanning directly affects scanning counts total measurement time, only few studies have considered influence during scan. How select an optimal achieve reliable results reduce important issue. To address this question, six geological reference materials from Geological Survey Japan (JLK‐1, JMS‐1, JMS‐2, JSD‐1,...
Understanding the impact of earthquakes on subaqueous environments is key for submarine paleoseismological investigations seeking to provide long-term records past earthquakes. For this purpose, event deposits (e.g., turbidites) are, among others, identified and stratigraphically correlated over broad areas test synchronous occurrence gravity flows. Hence, detailed spatiotemporal petrographic geochemical fingerprints such are required advance knowledge about sediment source underlying...
ABSTRACT Deep-sea and subseafloor sedimentary environments host heterotrophic microbial communities that contribute to Earth’s carbon cycling. However, the potential metabolic functions of individual microorganisms their biogeographical distributions in hadal ocean sediments remain largely unexplored. In this study, we conducted single-cell genome sequencing on sediment samples collected from six sites (7,445–8,023 m water depth) along an approximately 500 km transect Japan Trench during...
Abstract Conventional pollution monitoring strategies for heavy metals are often costly and unpractical. Innovative sampling analytical approaches therefore needed to efficiently monitor large areas. This study presents a novel, simple, fast, inexpensive method metal that uses cation-exchange resin sachets the micro-XRF core-scanning technique (XRF-CS). The passive samplers act as concentrators of cationic species can be readily deployed spatially temporally record signals. number tasks then...
Abstract The long‐chain diol index (LDI) is a new organic sea surface temperature (SST) proxy based on the distribution of diols. It has been applied in several environments but not yet subpolar regions. Here we tested LDI sediments and sediment core from Sea Okhotsk, which southernmost seasonal ice‐covered region Northern Hemisphere, compared it with other proxies, that is, TEX L 86 . In sediments, correlated autumn SST, similar to different correlates best summer subsurface temperature....
In-situ soft sediment deformation structures (SSDS) are commonly used as paleoseismic indicators in marine and lacustrine sedimentary records. Earthquake-related shear can deform the shallow subsurface through Kelvin-Helmholtz instability. The SSDS related to instability have been quantify shaking strength of past earthquakes. However, relative importance i) lithology physical properties, ii) potential basal surfaces (e.g. clastic deposits), iii) slope angle, iv) seismic peak ground...
Abstract We report the first-ever basin-wide geomorphological characterization of a high-resolution bathymetry map in steeply incised valley-occupying intra-mountainous lake Eastern Alps. The resulting new Lake Hallstatt is then combined with reflection seismic and sedimentary core analyses to document, characterize date recent (<200 years) subaquatic landslides. area located UNESCO World Heritage Cultural Landscape Hallstatt–Dachstein area, famous for its well-documented medieval...
The granular mechanics of lunar and Martian regolith remain inadequately understood, impeding progress in successful exploration, landing, drilling, sampling, construction activities on extraterrestrial surfaces. This study aims to bridge this knowledge gap by investigating the behavior under impact conditions. Impact cratering experiments were conducted for highlands, mare, simulants (LHS-1, LMS-1, MGS-1, respectively), terrestrial silica sand with similar particle sizes as target...
The impact of human activities has been increasing to a degree where humans now outcompete many natural processes. When interpreting environmental and climatic changes recorded in archives on historical time scales, it is therefore important be able disentangle the relative contribution anthropogenic Lake Meihua Ilan Plain northeastern Taiwan offers particularly suitable opportunity test how known from records can lacustrine sediment. For this purpose, three cores have studied by multiproxy...
Abstract Seismic hazard maps are crucial for earthquake mitigation and mostly rely on probabilistic seismic analysis (PSHA). However, the practise value of PSHA under debate because objective testing procedures scarce. We present a lacustrine turbidite record revealing 44 earthquakes over last ~ 14 ka use it to test curves in southern Austria. derive local intensities paleo-earthquakes by applying scaling relationships between sedimentary imprint intensity well-documented historical...
In this study, periods of prehistoric anthropogenic activity in the Hallstatt salt mining area (Upper Austria) are reconstructed from elemental (XRF-scanning, Q-ICP-MS) and Pb isotopic analyses (206Pb,207Pb,208Pb) a radiocarbon-dated, 137-cm-long peat core covering past ~7,000 years. The was retrieved minerotrophic fen High Valley. Distinct metal enrichments attributed to low impact can be traced back time around 2350 cal BCE another period 1800 BCE. Late Bronze Age Early Iron (~1300 ~500...
Abstract The delineation of sediment facies provides essential background information for a broad range investigations in geosciences but is often constrained quality or quantity. Here we leverage improvements machine learning and X-ray fluorescence core scanning to develop an improved approach automatic sediment-facies classification. This was developed tested on regional-scale high-resolution elemental dataset from cores covering various typical the southern North Sea tidal flat, Germany....
DATA REPORT article Front. Ecol. Evol., 25 August 2023Sec. Paleontology Volume 11 - 2023 | https://doi.org/10.3389/fevo.2023.1171891