A5023364256- Geology and Paleoclimatology Research
- Methane Hydrates and Related Phenomena
- Geological formations and processes
- Cryospheric studies and observations
- Geological and Geochemical Analysis
- Hydrocarbon exploration and reservoir analysis
- Geological Studies and Exploration
- Pleistocene-Era Hominins and Archaeology
- Geomagnetism and Paleomagnetism Studies
- earthquake and tectonic studies
- Planetary Science and Exploration
- Geochemistry and Geologic Mapping
- Geological and Tectonic Studies in Latin America
- Climate change and permafrost
- Astro and Planetary Science
- High-pressure geophysics and materials
- Geochemistry and Elemental Analysis
- Geological and Geophysical Studies Worldwide
- Environmental and Cultural Studies in Latin America and Beyond
- Isotope Analysis in Ecology
- Paleontology and Stratigraphy of Fossils
- Heavy metals in environment
- Climate variability and models
- Oceanographic and Atmospheric Processes
- Polar Research and Ecology
Universidad de Magallanes
2015-2023
Universität Trier
2012-2022
Bridger Photonics (United States)
2017
Fraunhofer Institute for Building Physics
2014
Trier University of Applied Sciences
2003-2008
Heidelberg University
1996-2002
Universidade de Santiago de Compostela
2002
University of Freiburg
1999
University of Chile
1993
University of Tübingen
1989
Dust deposition in the Southern Ocean constitutes a critical modulator of past global climate variability, but how it has varied temporally and geographically is underdetermined. Here, we present data sets glacial-interglacial dust-supply cycles from largest sector, polar South Pacific, indicating three times higher dust during glacial periods than interglacials for million years. Although most likely source Pacific Australia New Zealand, pattern timing lithogenic sediment similar to records...
The Drake Passage (DP) is the major geographic constriction for Antarctic Circumpolar Current (ACC) and exerts a strong control on exchange of physical, chemical, biological properties between Atlantic, Pacific, Indian Ocean basins. Resolving changes in flow circumpolar water masses through this gateway is, therefore, crucial advancing our understanding Southern Ocean's role global ocean climate variability. Here, we reconstruct DP throughflow dynamics over past 65,000 y based grain size...
Abstract Regional variations of weather pattern were analyzed along a west-to-east profile across the Southern Andes (53°S), one most pronounced climate-divides in world. For first time we present meteorological record from an array three automatic stations (AWS), operated by authors, for central part climate divide which, together with previously existing Chilean stations, complete transect. These data cover period 3 yr. October 1999 until September 2002. Air temperatures are highly...
Glacial millennial‐scale paleoceanographic changes in the Southeast Pacific and adjacent Southern Ocean are poorly known due to scarcity of well‐dated high resolution sediment records. Here we present new surface water records from core MD07‐3128 recovered at 53°S off entrance Strait Magellan. The alkenone‐derived sea temperature (SST) record reveals a very strong warming ca. 8°C over last Termination substantial variability glacial section largely consistent with our planktonic foraminifera...
Ombrotrophic peat bogs have been widely used to evaluate long-term records of atmospheric mercury (Hg) deposition. One the major aims these investigations is estimation increase in Hg fluxes during industrial age compared preindustrial fluxes. Comparability accumulation rates calculated from density, rates, and concentrations requires linearity between parameters. Peat formation a dynamic process accompanied by intense mass loss alteration organic material. Our on three cores Magellanic...
Se han estudiado testigos de tefras y sedimentos la peninsula Munoz Gamero con el seno Skyring proposito mejorar tefrocronologia local. Nuevas edades 14C junto tasas crecimiento las turbas sedimentacion, proporcionan nuevas marcas para edad tefras. La capa mas gruesa tefra (5-15 cm) se origino en una erupcion del volcan monte Burney, a los 4,254±120 anos calibrados AP. Las isopacas esta indican deposicion ca. 2,5 3 km3 tefra, principalmente area andina forestada, al sureste volcan. El Burney...
Moraine systems of Glaciar Lengua (unofficial name) and neighbouring glaciers Gran Campo Nevado (53°S) in the southernmost Andes were mapped dated by dendrochronological means. They formed around AD 1628, 1872/1875, 1886, 1902, 1912 1941 with advance 1870s being calendar dated. Recessional moraines within each moraine system correspond to brief standstills or minor readvances. A significantly older could not be directly methods as forest on it was assumed second-generation older. From...
RESUMEN. Petrografia y geoquimica de rocas cuaternarias la Zona Volcanica Sur los Andes entre 41°30’ 46°00’S, Chile. Los centros volcanicos del frente cuaternario (ZVS) Andes, ubicados las latitudes 41°30’S son predominantemente basalticos andesitico-basalticos, contenidos bajos a medios K. Andesitas dacitas menos abundantes que basalticas se encuentran riolitas solo en el volcan Chaiten. Las volcanicas pleistocenas varian composicion basalto dacita, pero holocenas fundamentalmente basaltos...
Redox-driven biogeochemical cycling of iron plays an integral role in the complex process network ecosystems, such as carbon cycling, fate nutrients and greenhouse gas emissions. We investigate Fe-(hydr)oxide (trans)formation pathways from rhyolitic tephra acidic topsoils South Patagonian Andosols to evaluate ecological relevance terrestrial for this sensitive fjord ecosystem. Using bulk geochemical analyses combined with micrometer-scale-measurements on individual soil aggregates pumice, we...
Pliocene and Pleistocene deep-sea trench sediments cored near the Chile Triple Junction (Ocean Drilling Program Leg 141) were analysed for major trace element concentrations, Sr, Nd Pb isotopic ratios. Comparisons with potential source rocks of these suggest little alteration during sediment transport diagenesis. The compositions reflect exposed area fractions different erosion rates upper-crustal rock units Southern Andes, indicating that denudation, deposition formed an almost closed...
Research Article| August 01, 2006 Millennium-scale volcanic impact on a superhumid and pristine ecosystem Rolf Kilian; Kilian 1Lehrstuhl für Geologie, Universität Trier, FB VI, 54286 Germany Search for other works by this author on: GSW Google Scholar Harald Biester; Biester 2Institut Umweltgeochemie, Heidelberg, 69120 Jan Behrmann; Behrmann 3Leibniz-Institute of Marine Sciences, IFM-GEOMAR, Wischhofstr. 1-3, 24148 Kiel, Oscar Baeza; Baeza 4Lehrstuhl Martinus Fesq-Martin; Fesq-Martin...
Abstract Digital terrain models of the southern Chilean ice cap Gran Campo Nevado reflecting situations years 1984 and 2000 were compared in order to obtain volumetric glacier changes that had occurred during this period. The result shows a slightly negative mean change 3.80 m. outlet tongues show massive thinning, whereas centre is characterized by moderate thickening. Thus distinct altitudinal variability noticed. Hypothetically could be explained combined effects increased precipitation...
Abstract Here we provide three new Holocene (11–0 cal ka BP) alkenone-derived sea surface temperature (SST) records from the southernmost Chilean fjord region (50–53°S). SST estimates may be biased towards summer in this region, as revealed by a large set of sediments. The show consistently warmer than present-day SSTs except for past ~ 0.6 BP. However, they do not exhibit an early optimum registered further north off Chile and Antarctica. This have resulted combination factors including...