A5076212715- Geology and Paleoclimatology Research
- Geological formations and processes
- Geological and Geophysical Studies
- Hydrocarbon exploration and reservoir analysis
- Geological Studies and Exploration
- Marine and environmental studies
- Pleistocene-Era Hominins and Archaeology
- Methane Hydrates and Related Phenomena
- Archaeology and ancient environmental studies
- Environmental Changes in China
- Aeolian processes and effects
- Tropical and Extratropical Cyclones Research
- Soil erosion and sediment transport
- Maritime and Coastal Archaeology
- Coastal and Marine Dynamics
- earthquake and tectonic studies
- Hydrology and Watershed Management Studies
- Ecology and biodiversity studies
- Ancient and Medieval Archaeology Studies
- Cryospheric studies and observations
- Geochemistry and Geologic Mapping
- Geochemistry and Elemental Analysis
- Geophysical Methods and Applications
- Climate change and permafrost
- Environmental and Agricultural Sciences
University of Cologne
2015-2024
Fischer (Germany)
2019
V. B. Sochava Institute of Geography
2016
University of Potsdam
2013-2014
Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung
2009-2013
Daimler (Germany)
1996
Kreditanstalt für Wiederaufbau
1994
Abstract. Grain-size distributions offer powerful proxies of past environmental conditions that are related to sediment sorting processes. However, they often multimodal character because sediments can get mixed during deposition. To facilitate the use grain size as palaeoenvironmental proxy, this study aims distinguish main detrital processes contribute lacustrine sedimentation across Tibetan Plateau using grain-size end-member modelling analysis. Between three and five robust...
Abstract Despite more than half a century of hominin fossil discoveries in eastern Africa, the regional environmental context evolution and dispersal is not well established due to lack continuous palaeoenvironmental records from one proven habitats early human populations, particularly for Pleistocene epoch. Here we present 620,000-year record Chew Bahir, southern Ethiopia, which proximal key sites. Our documents potential influence different episodes climatic variability on biological...
Abstract Reconstructions of climatic and environmental conditions can contribute to current debates about the factors that influenced early human dispersal within beyond Africa. Here we analyse a 200,000-year multi-proxy paleoclimate record from Chew Bahir, tectonic lake basin in southern Ethiopian rift. Our reveals two modes climate change, both associated temporally regionally with specific type behavior. The first is long-term trend towards greater aridity between 200,000 60,000 years...
Abstract. On 8 November 2013, category 5 Supertyphoon Haiyan made landfall on the Philippines. During a post-typhoon survey in February 2014, Haiyan-related sand deposition and morphological changes were documented at four severely affected sites with different exposure to typhoon track geological geomorphological settings. Onshore sheets reaching 100–250 m inland are restricted coastal areas significant inundation due amplification of surge levels embayments or accompanying long-wave...
Abstract Although the north‐western coast of Western Australia is highly vulnerable to tropical cyclones and tsunamis, little known about geological imprint historic prehistoric extreme wave events in this particular area. Despite a number site‐specific difficulties such as post‐depositional changes preservation potential event deposits, both tsunamis may be inferred from geomorphology stratigraphy beach ridge sequences, washover fans coastal lagoons or marshes. A further challenge...
Abstract Multifunctional aerogels, with intriguing micro‐morphologies and macroscopic sizes, are fabricated for the first time from silk fibroin (SF) biopolymer extracted Bombyx mori silkworm cocoon to optimize adsorption performances of heavy metal ions soluble organic pollutants. By a synergistic combination approaches such as surface‐modification SF polyethyleneimine (PEI) its hierarchical cryo‐assembly graphene oxide into various macrostructures, namely core‐shell, composite, Janus,...
The Atacama Desert in Chile is known to be one of the driest deserts on Earth, with dominating hyperaridity at least since Miocene. During recent times, however, especially southern part repeatedly experienced exceptional precipitation events, like 2015 and 2017. Locally, these events high rainfall rates caused catastrophic floods significant destruction human fatalities. Although meteorological drivers heavy rains are widely understood, only little about frequency amplitude similar...
Abstract Lake Towuti on Sulawesi Island, Indonesia, is located within the heart of Indo‐Pacific Warm Pool. This tropical lake surrounded by ultramafic (ophiolitic) rocks and lateritic soils that create a unique ferruginous depositional setting. In order to understand modern sediment deposition in Towuti, set 84 surface samples was collected from across entirety were analyzed for their physical, chemical, mineralogical biological constituents. End‐member analyses carried out elucidate origin,...
Abstract. For luminescence dating of potassium-rich (K) feldspars, the presence 40K within K-feldspar grains contributes significantly to internal dose rate sample. Whilst it is common practice determine uranium, thorium and potassium concentrations for external calculations, vast majority studies do not measure K-concentration. Instead, most apply published K-concentrations 10 ± 2 %, 12.5 0.5 % or 13 1 (Huntley Baril, 1997; Smedley et al., 2012; Zhao Li, 2005) their samples. The use these...
The Bronze Age marked an era of dense human settlement across the eastern Carpathian Basin, evidenced by numerous tell settlements. Many underwent erosion or have been overprinted subsequent anthropogenic activities resulting in only a limited number sites with well-preserved archaeological context. remaining provide critical opportunities to study prehistoric strategies and activities. Among these, Tell Toboliu, situated Romania, is characterised multiple occupational phases, including...
The hyperarid conditions of the central Atacama, characterized by extremely low precipitation and high evaporation rates, create a unique environment where soil stability is generally thought to be exceptionally due widespread gypsum salt enrichment. Terrestrial cosmogenic nuclide-based surface exposure ages suggest that many surfaces underwent limited no changes since Neogene or early Pleistocene. However, number recent studies also underline younger landscape-scale geomorphodynamic...
Abstract The catastrophic storm surge of tropical cyclone Nargis in May 2008 demonstrated Myanmar's exposure to coastal flooding. investigation sediments left by and its predecessors is an important contribution prepare for the impact future cyclones tsunamis region, because they may extend database long‐term hazard assessment beyond relatively short instrumental historical record. This study, first time, presents deposits modern from coast Myanmar. aim establish regional sedimentary...