A5028364982- Geology and Paleoclimatology Research
- Methane Hydrates and Related Phenomena
- Isotope Analysis in Ecology
- Geological and Geophysical Studies
- Paleontology and Stratigraphy of Fossils
- Astro and Planetary Science
- Marine and coastal ecosystems
- Marine Biology and Ecology Research
- Geophysics and Gravity Measurements
- Spacecraft and Cryogenic Technologies
- Astronomical Observations and Instrumentation
- Geomagnetism and Paleomagnetism Studies
- Geological formations and processes
- Planetary Science and Exploration
- Offshore Engineering and Technologies
- Hydrocarbon exploration and reservoir analysis
- Pleistocene-Era Hominins and Archaeology
- Cryospheric studies and observations
- Seismic Imaging and Inversion Techniques
- Polar Research and Ecology
- Reservoir Engineering and Simulation Methods
- Scientific Research and Discoveries
- Solar and Space Plasma Dynamics
- Astronomy and Astrophysical Research
- Geological and Geophysical Studies Worldwide
ETH Zurich
2017-2024
University of Bern
2012-2024
Past Global Changes
2024
Geological Institute
2023
Sam Houston State University
2021
University of Plymouth
2021
Geological Survey of Western Australia
2021
Tongji University
2021
Discovery Place
2021
Texas A&M University
2021
Abstract Combined analyses of deep tow magnetic anomalies and International Ocean Discovery Program Expedition 349 cores show that initial seafloor spreading started around 33 Ma in the northeastern South China Sea (SCS), but varied slightly by 1–2 Myr along northern continent‐ocean boundary (COB). A southward ridge jump ∼20 km occurred 23.6 East Subbasin; this timing also was coeval to onset Southwest Subbasin, which propagated for about 400 southwestward from ∼23.6 ∼21.5 Ma. The terminal...
Abstract Coring/logging data and physical property measurements from International Ocean Discovery Program Expedition 349 are integrated with, correlated to, reflection seismic to map sequence boundaries facies of the central basin neighboring regions South China Sea. First‐order interpreted, which Oligocene/Miocene, middle Miocene/late Miocene, Miocene/Pliocene, Pliocene/Pleistocene boundaries. A characteristic early Pleistocene strong reflector is also identified, marks top extensive...
Abstract Antarctica is one of the most vulnerable regions to climate change on Earth and studying past present responses this polar marine ecosystem environmental a matter urgency. Sedimentary ancient DNA ( sed aDNA) analysis can provide such insights into ecosystem-wide changes. Here we authenticated (through extensive contamination control aDNA damage analysis) metagenomic eukaryote from Scotia Sea region acquired during IODP Expedition 382. We also record ~1 Mio. years diatom chlorophyte...
Abstract A pronounced late Miocene cooling (LMC) from ~7 to 5.7 Ma has been documented in extratropical and tropical sea surface temperature records, but date, available proxy evidence not revealed a significant p CO 2 decline over this event. Here, we provide new, high‐resolution record the LMC based on alkenone carbon isotopic fractionation (ε ) measured sediments South Atlantic at Ocean Drilling Program (ODP) Site 1088. We apply recent calibration derived compilation of laboratory...
Abstract The Southern Ocean paleoceanography provides key insights into how iron fertilization and oceanic productivity developed through Pleistocene ice-ages their role in influencing the carbon cycle. We report a high-resolution record of dust deposition ocean for Antarctic Zone, close to main source, Patagonia. Our deep-ocean records cover last 1.5 Ma, thus doubling that from ice-cores. find 5 15-fold increase during glacials 2 5-fold biogenic silica deposition, reflecting higher...
Rapid ecosystem transitions and adverse effects on services as responses to combined climate human impacts are of major concern. Yet few long-term (i.e. >60 years) quantitative observational time series exist, particularly for ecosystems that have a long history intervention. Here, we combine three environmental pressures (land use, nutrients erosion) with summer winter reconstructions model simulations explore the system dynamics, resilience role disturbance regimes in varved eutrophic...
Calcareous benthic foraminifera can develop pores in their shells for gas exchange with seawater. Pore patterns, like porosity, pore density, and size, are influenced by environmental factors bottom water dissolved oxygen concentration (BWDO). Some foraminiferal species increase test porosity under low BWDO, making them a useful proxy reconstructing past oxygenation. The patterns BWDO is validated the Southeast Pacific (SEP) examining six compared to estimate on sediment sites. Specimens...
Scotia Sea and the Drake Passage is key towards understanding development of modern oceanic circulation patterns their implications for ice sheet growth decay. The sedimentary record southern basins documents regional tectonic, oceanographic climatic evolution since Eocene. However, a lack accurate age estimations has prevented calibration reconstructed history. upper was scientifically drilled first time in 2019 during International Ocean Discovery Program (IODP) Expedition 382, recovering...
Planktonic Foraminifera are unique paleo-environmental indicators through their excellent fossil record in ocean sediments. Their distribution and diversity affected by different environmental factors including anthropogenically forced climate change. Until now, historical changes have not been fully assessed at the global scale. Here we present FORCIS (Foraminifera Response to Climatic Stress) database on foraminiferal species from 1910 until 2018 published unpublished data. The includes...
Early and Mid‐Pleistocene climate, ocean hydrography ice sheet dynamics have been reconstructed using a high‐resolution data set (planktonic benthic δ 18 O time series, faunal‐based sea surface temperature (SST) reconstructions ice‐rafted debris (IRD)) record from high‐deposition‐rate sedimentary succession recovered at the Gardar Drift formation in subpolar North Atlantic (Integrated Ocean Drilling Program Leg 306, Site U1314). Our spans late Marine Isotope Stage (MIS) 31 to MIS 19...
High-resolution paleoproductivity variations have been reconstructed in a productive cell the Alboran Sea for Holocene. Fossil coccolithophore assemblages studied along with [Formula: see text]-estimated sea-surface temperature (SST) and other paleoenvironmental proxies. The appearance of this is suggested at 7.7 ka cal. BP was linked to establishment western anti-cyclonic gyre. From that time until present, nannofossil accumulation rate Florisphaera profunda has revealed successive episodes...
Abstract Radiolarians are a very diverse microzooplanktonic group, often distributed in regionally restricted assemblages and responding to specific environmental factors. These properties of radiolarian make the group more conducive for development application basin‐wide ecological models. Here we use new surface sediment data set from western Pacific demonstrate that patterns derived open‐ocean sets cannot be transferred on semirestricted marginal seas. The consists 160 samples three...