A5075056484- Geology and Paleoclimatology Research
- Methane Hydrates and Related Phenomena
- Geochemistry and Elemental Analysis
- Atmospheric and Environmental Gas Dynamics
- CO2 Sequestration and Geologic Interactions
- Isotope Analysis in Ecology
- Geological and Geochemical Analysis
- Hydrocarbon exploration and reservoir analysis
- Ocean Acidification Effects and Responses
- Groundwater and Isotope Geochemistry
- Paleontology and Stratigraphy of Fossils
- Geochemistry and Geologic Mapping
- Marine Biology and Ecology Research
- earthquake and tectonic studies
- Mercury impact and mitigation studies
- Astro and Planetary Science
- Arctic and Antarctic ice dynamics
- Marine and coastal ecosystems
- Reservoir Engineering and Simulation Methods
- Drilling and Well Engineering
- Heavy metals in environment
- Hydraulic Fracturing and Reservoir Analysis
- Marine and environmental studies
- Geological and Geophysical Studies Worldwide
- Radioactive element chemistry and processing
National Oceanography Centre
2014-2024
University of Southampton
2015-2024
The Open University
2003-2013
Natural Environment Research Council
2012
University of Bristol
1998-2004
Kent State University Geauga
2004
Natural History Museum
2002
University of Cambridge
1994-1996
Centre for Rural Education and Economic Development
1990
University of Cincinnati
1983
More than 250 plumes of gas bubbles have been discovered emanating from the seabed West Spitsbergen continental margin, in a depth range 150–400 m, at and above present upper limit hydrate stability zone (GHSZ). Some extend upward to within 50 m sea surface. The is predominantly methane. Warming northward‐flowing current by 1°C over last thirty years likely increased release methane reducing extent GHSZ, causing liberation decomposing hydrate. If this process becomes widespread along Arctic...
Since the first discovery of deep-sea hydrothermal vents along Galápagos Rift in 1977, numerous vent sites and endemic faunal assemblages have been found mid-ocean ridges back-arc basins at low to mid latitudes. These discoveries suggested existence separate biogeographic provinces Atlantic North West Pacific, a province including South Pacific Indian Ocean, separation East Rise, Rise. The Southern Ocean is known be region high species diversity centre origin for global fauna. It has also...
Land-based enhanced rock weathering (ERW) is a biogeochemical carbon dioxide removal (CDR) strategy aiming to accelerate natural geological processes of sequestration through application crushed silicate rocks, such as basalt, croplands and forested landscapes. However, the efficacy approach when undertaken with its potential co-benefits for agriculture, require experimental field evaluation. Here we report that amending UK clay-loam agricultural soil high loading (10 kg/m2 ) relatively...
Terrestrial enhanced weathering (EW) of silicate rocks, such as crushed basalt, on farmlands is a promising scalable atmospheric carbon dioxide removal (CDR) strategy that urgently requires performance assessment with commercial farming practices. We report findings from large-scale replicated EW field trial across typical maize-soybean rotation an experimental farm in the heart United Sates Corn Belt over 4 y (2016 to 2020). show average combined loss major cations (Ca 2+ and Mg ) basalt...
Chromium isotopes are fractionated during redox reactions and have the potential to provide a record of changes in oxygenation levels oceans geological past. However, Cr is trace metal seawater its low concentrations make isotopic measurements challenging. Here we report first determinations δCr53 for from open ocean (Argentine Basin) coastal (Southampton Water) settings, using double-spike technique. The total chromium concentration Southampton Water 1.85 nM, whereas content Argentine Basin...
By com parison o f the methane m ixing ratio and carbon isotope (<513C ch4 ) in Arctic air w ith regional background, incremental input C H 4 an parcel source < 513C signature can be determined.Using this technique bulk soiuce arriving at Spitsbergen late summer 2008 2009 was found to -6 8 %o, indicative dominance a bio genic soiuce.This is close emissions from boreal wetlands.In spring, when wet land as frozen, th e sig n atu re ore enriched 13C -5 3 ± 6%o mass back trajectories indicating...
Abstract Widespread seepage of methane from seafloor sediments offshore Svalbard close to the landward limit gas hydrate stability zone (GHSZ) may, in part, be driven by destabilization due bottom water warming. To assess whether this reaches atmosphere where it may contribute further warming, we have undertaken comprehensive surveys seawater and air on upper slope shelf region. Near GHSZ at ∼400 m depth, concentrations are highest seabed, reaching 825 nM. A simple box model dissolved...
Carbon capture and storage (CCS) is a key technology to reduce carbon dioxide (CO2) emissions from industrial processes in feasible, substantial, timely manner. For geological CO2 be safe, reliable, accepted by society, robust strategies for leakage detection, quantification management are crucial. The STEMM-CCS (Strategies Environmental Monitoring of Marine Capture Storage) project aimed provide techniques understanding enable inform cost-effective monitoring CCS sites the marine...
Analyses of Li and isotopes in serpentinized peridotites have been performed using Thermo‐Ionisation Mass Spectrometry (TIMS) Secondary Ion (SIMS) techniques on samples collected from the southwest Indian Ridge (SWIR). In bulk samples, concentrations range 0.6 to 8.2 ppm, while whole rock δ 6 values −2.9 −14‰. situ analyses display a greater both concentration (0.1–19.5 ppm) isotopic composition (−27 +19‰), with portions having higher than associated relict phases. These variations may...