A5084231510- Methane Hydrates and Related Phenomena
- Geology and Paleoclimatology Research
- Astro and Planetary Science
- Planetary Science and Exploration
- Geological and Geophysical Studies
- Spacecraft and Cryogenic Technologies
- Geophysics and Gravity Measurements
- Offshore Engineering and Technologies
- Astronomical Observations and Instrumentation
- Geomagnetism and Paleomagnetism Studies
- Scientific Research and Discoveries
- Solar and Space Plasma Dynamics
- Isotope Analysis in Ecology
- Geological Modeling and Analysis
- Astronomy and Astrophysical Research
- Drilling and Well Engineering
- Hydrocarbon exploration and reservoir analysis
- Oceanographic and Atmospheric Processes
- Inertial Sensor and Navigation
- Paleontology and Stratigraphy of Fossils
- Groundwater and Isotope Geochemistry
- Reservoir Engineering and Simulation Methods
- Satellite Image Processing and Photogrammetry
- Marine Biology and Ecology Research
- Underwater Vehicles and Communication Systems
University of Bremen
2021-2022
Bjerknes Centre for Climate Research
2019-2021
University of Bergen
2019-2021
Abstract Increased use and improved methodology of carbonate clumped isotope thermometry has greatly enhanced our ability to interrogate a suite Earth‐system processes. However, interlaboratory discrepancies in quantifying (Δ 47 ) measurements persist, their specific sources remain unclear. To address differences, we first provide consensus values from the community for four standards relative heated equilibrated gases with 1,819 individual analyses 10 laboratories. Then analyzed along three...
The clumped isotope (Δ47) proxy is a promising geochemical tool to reconstruct past ocean temperatures far back in time and unknown settings, due its unique thermodynamic basis that renders it independent from other environmental factors like seawater composition. Although previously hampered by large sample-size requirements, recent methodological advances have made the paleoceanographic application of Δ47 on small (<5 mg) foraminifer samples possible. Previous studies show reasonable match...
Abstract The Indo‐Pacific Warm Pool (IPWP) plays a crucial role in influencing climate dynamics both the tropics and globally. Yet, there is an ongoing controversy concerning evolution of surface temperatures IPWP since Pliocene, which fueled by contradictory proxy evidence. Temperature reconstructions using TEX 86 indicate gradual cooling ∼2°C from Pliocene to today while Mg/Ca‐based studies planktonic foraminifera do not report any long‐term trends. A bias Mg/Ca records due seawater...
Abstract Obtaining absolute temperatures of the ocean in deep time is complicated by lack constraints on seawater chemistry. Seawater salinity, carbonate ion concentration, δ 18 O, and elemental abundance changes may obscure widely applied paleoproxies. In addition, with foraminifera‐based proxies over long scales or through major transitions, taxonomic turnover can impair robustness a record. While requiring larger sample sizes than most other proxies, clumped isotope method independent...
Abstract. The Pliocene sedimentary record provides a window into Earth's climate dynamics under warmer-than-present boundary conditions. However, the cannot be considered stable warm that constitutes solid baseline for middle-of-the-road future projections. increasing availability of time-continuous archives (e.g., marine sediment cores) reveals complex temporal and spatial patterns ocean variability on astronomical timescales. Perth Basin is particularly interesting in respect because it...
&lt;p&gt;The Pliocene sedimentary record provides a window into Earth&amp;#8217;s climate dynamics under warmer-than-present boundary conditions. However, the cannot be considered stable warm that constitutes solid baseline for middle-road future projections. Indeed, increasing availability of time-continuous archives (e.g., marine sediment cores) reveals complex temporal and spatial patterns ocean variability on astronomical timescales. The Perth Basin is particularly...
Abstract. The Pliocene sedimentary record provides a window into Earth’s climate dynamics under warmer-than-present boundary conditions. However, the cannot be considered stable warm that constitutes solid baseline for middle-road future projections. Indeed, increasing availability of time-continuous archives (e.g., marine sediment cores) reveals complex temporal and spatial patterns ocean variability on astronomical timescales. Perth Basin is particularly interesting in respect because it...