جست‌وجوی استاد و پژوهشگر

Antje Wegwerthمشاهده پروفایل

پژوهشگر

• Paleoceanography
• Marine Geochemistry
• Climate Dynamics
• +۳ مورد دیگر

Dr. Antje Wegwerth is a Researcher at the Leibniz-Institute for Baltic Sea Research (IOW) in Rostock, Germany. She specializes in paleoceanography, marine geochemistry, and climate dynamics, with a focus on reconstructing past environmental changes in the Black Sea, Baltic Sea, and other marine systems. Her work integrates sedimentological, geochemical, and isotopic analyses to explore redox dynamics, trace metal cycling, and glacial-interglacial climate interactions. Education: She holds a PhD in Geology-Paleontology from Freie Universität Berlin (2015) and a diploma in Geology-Paleontology from the same institution (2011). Her research has involved collaborative projects such as SESPOD (Subantarctic Eastern South Pacific Ocean Dynamics) and BlackPearl (Black Sea Palaeoclimate Studies). Research Cruises: Includes expeditions on RV Sonne (e.g., MAPUCHE in Chile, SO290 in the Tasman Sea) and RV Meteor in the Black Sea. Key Projects: DFG-funded SESPOD (since 2022) and BlackPearl (since 2016), focusing on sediment records and climate reconstructions. Field Studies: Collaborative work at CEREGE (France) and involvement in sediment coring expeditions. Her research emphasizes interhemispheric climate linkages, redox-proxy applications, and the impact of ice sheets on marine systems. Recent studies highlight millennial-scale variability in the Black Sea and Baltic Sea inflow dynamics.

Marcus Gutjahrمشاهده پروفایل

پژوهشگر

• Isotope Geochemistry
• Paleooceanography
• Marine Biogeochemistry
• +۶ مورد دیگر

Marcus Gutjahr is a Senior Scientist at GEOMAR Helmholtz Centre for Ocean Research Kiel, where he works in the Research Division 2: Marine Biogeochemistry, specifically in the Marine Geosystems unit. He has been with GEOMAR since 2013 and has an extensive background in isotope geochemistry and paleooceanography. Dr. Gutjahr received his Dr. sc. nat. from the Swiss Federal Institute of Technology in Zurich (ETHZ) in 2007, an M.Sc. in Geology from the University of Canterbury, Christchurch, New Zealand in 2002, and completed his undergraduate intermediate degree at Eberhard-Karls-Universität Tübingen, Germany in 1999. Prior to joining GEOMAR, he was a Postdoctoral Research Fellow at the University of Southampton (2011-2012) and the University of Bristol (2007-2011). Dr. Gutjahr's research focuses on the development and application of novel isotope geochemical tools for modern and paleooceanographic research. His main interests include Southern Ocean circulation dynamics, Antarctic Bottom Water formation, the trace metal budget of the Southern Ocean (particularly lead and neodymium), atmospheric and marine carbon cycling during major climatic perturbations in Earth's history, the development of new isotope geochemical tracers for weathering conditions, and the disintegration of the North American Laurentide Ice Sheet. His work often involves dedicated calibration of new marine archives. His recent publications demonstrate a strong focus on using isotope systems (particularly neodymium, lead, and tungsten) to trace ocean circulation patterns, ice sheet dynamics, and biogeochemical cycles across various timescales from sub-millennial to Cenozoic. His research spans multiple ocean basins with particular emphasis on the Southern Ocean, North Atlantic, and Pacific sectors. Swiss National Science Foundation fellowship (2007) EU Marie Curie Intra-European Fellowship (2008/2009) Dr. Gutjahr has led and participated in numerous research expeditions, including RV Polarstern expeditions to the Southern Ocean and Weddell Sea, and served as co-PI for IODP Expedition 382 "Iceberg Alley". His work involves extensive field research, laboratory analysis, and international collaboration across multiple institutions. His research group at GEOMAR focuses on marine geochemistry and paleooceanography, utilizing advanced analytical techniques to study past and present ocean circulation and climate dynamics. The team frequently collaborates with international partners on large-scale ocean drilling and research vessel expeditions.

Jörg Lippoldمشاهده پروفایل

پژوهشگر

• Paleooceanography
• Paleoclimatology
• Ocean Circulation
• +۵ مورد دیگر

Dr. Jörg Lippold is a prominent researcher at the Institute of Geosciences at the University of Heidelberg, where he maintains his office at Im Neuenheimer Feld 234, Raum 503 in Heidelberg, Germany. His work focuses on understanding Earth's past climate systems through the analysis of deep-sea sediments and the application of radiogenic tracers, particularly in the context of Atlantic ocean circulation dynamics across glacial-interglacial timescales. Dr. Lippold's research interests center on paleooceanography and paleoclimatology, with specific expertise in ocean circulation patterns and climate dynamics across glacial and interglacial periods. His work investigates the stability of the Atlantic thermohaline circulation, mechanisms behind rapid climate changes, and the application of radiogenic tracers like protactinium-231 and thorium-230 to reconstruct past ocean circulation patterns. His methodological approach combines deep-sea sediment analysis with geochemical proxy measurements to understand how ocean circulation has influenced global climate systems throughout Earth's history. An analysis of Dr. Lippold's publication record reveals a strong focus on using the 231Pa/230Th ratio as a paleocirculation proxy, particularly for studying the Atlantic Meridional Overturning Circulation (AMOC) during key climate transitions. His research spans multiple ocean basins including the Atlantic, Pacific, and Arctic, with particular attention to how ice sheet dynamics, meltwater discharge, and deep-water formation have influenced global climate patterns. His collaborative work often involves international teams analyzing sediment cores from key locations to reconstruct past ocean circulation changes. Dr. Lippold maintains an active research program with numerous ongoing collaborations across Europe and internationally. His work bridges paleoceanography with contemporary climate science, providing critical historical context for understanding potential future changes in ocean circulation and their climate impacts. His laboratory work at Heidelberg University involves advanced geochemical analyses of marine sediment cores, contributing significantly to our understanding of how Earth's climate system has operated during previous glacial cycles.

• Physical Oceanography
• Climate Dynamics
• Ocean Circulation
• +۲ مورد دیگر

Daniel Lizarbe is a Researcher at the GEOMAR Helmholtz Centre for Ocean Research Kiel , where he works within the Ocean Circulation and Climate Dynamics division and the Ocean Dynamics unit. His research interests focus on Physical Oceanography, Climate Dynamics, and Ocean Circulation, aligning with GEOMAR's mission to study ocean-atmosphere interactions and climate systems. Research Interests Physical Oceanography Climate Dynamics Ocean Circulation