A5053613727- Methane Hydrates and Related Phenomena
- Geology and Paleoclimatology Research
- Geophysics and Gravity Measurements
- Paleontology and Stratigraphy of Fossils
- Spacecraft and Cryogenic Technologies
- Offshore Engineering and Technologies
- Astronomical Observations and Instrumentation
- Astro and Planetary Science
- Isotope Analysis in Ecology
- Scientific Research and Discoveries
- Geomagnetism and Paleomagnetism Studies
- Astronomy and Astrophysical Research
- Geological and Geochemical Analysis
- Geological Modeling and Analysis
- Inertial Sensor and Navigation
- Nuclear Physics and Applications
- Marine and coastal ecosystems
- Solar and Space Plasma Dynamics
- Gamma-ray bursts and supernovae
- Calcium Carbonate Crystallization and Inhibition
- Seismic Imaging and Inversion Techniques
- Planetary Science and Exploration
- Drilling and Well Engineering
- Geochemistry and Elemental Analysis
- Reservoir Engineering and Simulation Methods
Cardiff University
2013-2025
University of the South Pacific
2016-2025
University of Birmingham
2016
Queen Mary University of London
2016
University of Tasmania
2015
International Ocean Discovery Program
2015
University of Leeds
2008-2010
Despite recent advances, the link between evolution of atmospheric CO
Sea surface and subsurface temperatures over large parts of the ocean during Eocene epoch (55.5-33.7 Ma) exceeded modern values by several degrees, which must have affected a number oceanic processes. Here, we focus on effect elevated water column efficiency biological pump, particularly in relation to carbon nutrient cycling. We use stable isotope from exceptionally well-preserved planktonic foraminiferal calcite Tanzania Mexico reconstruct vertical gradients upper column, exploiting fact...
Abstract Paleontological reconstructions of plankton community structure during warm periods the Cenozoic (last 66 million years) reveal that deep-dwelling ‘twilight zone’ (200–1000 m) were less abundant and diverse, lived much closer to surface, than in colder, more recent climates. We suggest this is a consequence temperature’s role controlling rate sinking organic matter broken down metabolized by bacteria, process occurs faster at warmer temperatures. In ocean, smaller fraction reaches...
Abstract Increasing evidence suggests that nearshore turbid coral reefs may mitigate bleaching of reef building calcifiers and play a critical role in the future marine biodiversity coastal areas. However, biomineralization processes on are relatively understudied compared to clear water counterparts most published work focuses corals. Here, we investigate how mixotrophic giant clam Tridacna squamosa , bivalve with ecological, cultural economic significance, grows across mosaic less Coral...
Abstract Marine calcifying organisms on coral reefs face significant threats from various anthropogenic stressors. To better understand how these will respond to a rapidly changing ocean, it is crucial investigate their biomineralization across different reef environments. Despite resilience and potential as conservation hotspots, turbid reefs—projected expand throughout the 21st century—remain understudied, including limited knowledge of processes within Herein, for first time, we assess...
Nearshore reefs, at the interface of land-sea interactions, provide essential ecosystem services, but are susceptible to multiple global and local stressors. These stressors can detrimentally impact coral growth continuity reef framework. Here, we analyse records (1998 - 2016) massive Porites spp. colonies from nearshore reefs in Fiji. Our aim is assess role thermal stress turbidity on across a range environments. findings reveal negative linear relationship between extension seawater...
IODP Expedition 350 was the first to be drilled in rear part of Izu-Bonin, although several sites had been arc axis fore-arc region; scientific objective understand evolution Izu arc, by drilling a deep-water volcaniclastic section with long temporal record (Site U1437). The is dominated series basaltic dacitic seamount chains up ~100-km roughly perpendicular front. Dredge samples from these are geochemically distinct front rocks, and undertaken this asymmetry. Site U1437 lies an ~20-km-wide...
Abstract Trace element and δ18O values of foraminifera are widely used to reconstruct oceanic temperatures throughout the Cenozoic beyond. Previous work evaluating geochemistry with differing degrees physical preservation have shown that Mg/Ca paleothermometers give discrepant in recrystallized tests, planktonic oxygen isotopes often yielding significantly lower than ratios. To study mobility elements during diagenesis, we performed microspatial trace analyses Eocene Morozovella. Element...
Abstract The Mg/Ca ratio of foraminiferal calcite is a widely used empirical proxy for ocean temperature. Foraminiferal Mg/Ca‐temperature relationships are based on extant species and species‐specific, introducing uncertainty when applying them to the fossil tests extinct groups. Many modern show remarkable heterogeneity in their intra‐test Mg distributions, typically due presence high bands, which have biological origin. Importantly, banding patterns differ between species, could affect...
This article provides novel data on the microstructure and crystallographic texture of modern giant clam shells (Tridacna squamosa Hippopus hippopus) from Coral Triangle region northeast Borneo. Giant clams have two aragonitic shell layers—the inner outer layer. dataset focuses layer as this is well preserved not affected by diagenetic alteration. To prepare samples for analysis, were cut longitudinally at axis maximum growth mounted onto thin sections. Data collection involved scanning...
Abstract. Muricate planktonic foraminifera comprise an extinct clade that was diverse and abundant in the Paleogene oceans are widely used palaeoclimate research as geochemical proxy carriers for upper oceans. Their characteristic wall texture has surface projections called “muricae” formed by upward deflection mounding of successive layers test wall. The group is generally considered to have lacked “true spines”: is, acicular calcite crystals embedded projecting from such occur many modern...
Abstract Marine calcifying organisms on coral reefs are under threat from a range of anthropogenic stressors. Understanding their biomineralization pathways in different reef environments is key to unravelling response rapidly changing ocean. Turbid forecast increase throughout the 21st century and resilient conservation hotspots, yet understudied due lack information resolving processes. Herein, for first time, we assess crystallographic geochemical signatures aragonite giant clam shells...
Abstract. Electron backscatter diffraction (EBSD) analysis enables a unique perspective of the internal microstructure foraminiferal calcite. Specifically, EBSD provides crystallographic data from within test, highlighting highly organised “mesocrystal” structure crystallographically aligned domains throughout formed by sequential deposits microgranular We compared maps across test walls both poorly preserved and well-preserved specimens planktonic foraminifera species Globigerinoides ruber...