Project of the Week
Dr Mel Murphy
This summer, Emily and I spent nearly three months sampling glacier- and snow-fed rivers draining continuous permafrost in the high Arctic Zackenberg River catchment, NE Greenland. Rivers play an important role in the long-term carbon cycle, transporting dissolved and particulate material from the chemical and physical breakdown of rocks on the continents to the oceans. These ‘weathering’ processes can both release and remove carbon dioxide (CO2) from the atmosphere, and we don’t know which of these processes dominates overall in Arctic river systems. This has huge implications for understanding whether Arctic rivers are acting as a source or sink for atmospheric CO2, and therefore, how weathering in the Arctic impacts the long-term carbon cycle and climate.
All members, including PhD and Masters Researchers, can be contacted either via this website or their institutional contact addresses
Dr Philip Pogge von Srtrandmann
I am interested in how the Earth’s biogeochemical cycles respond to changes in climate. In particular, how chemical weathering (the main natural removal process of atmospheric CO2) responds to climatic warming and cooling. This is important both for determining how the future climate will evolve due to anthropogenic warming, but also if we can enhance these natural processes to artificially remove CO2 on faster timescales.
Dr Mel Murphy
My research focuses on examining the interplay between terrestrial weathering processes and (i) ocean oxygenation and redox chemistry (ii) atmospheric CO2, and ultimately (iii) the Earth’s climate system over modern and geological timescales. In particular, I am interested in silicate, carbonate and sulfide mineral weathering at high-latitude glaciated and permafrost-dominated Arctic regions.
To do this, I apply non-traditional isotopic, elemental and mineralogical tools to better understand geochemical cycling in riverine/estuarine and marine environments
Dr David Wilson
As a geologist and earth scientist, my research uses isotopic and geochemical measurements to investigate past changes in ocean chemistry, ocean circulation, continental weathering, and polar ice sheets, and how these interacted with Earth’s climate evolution. Evidence from such paleoclimate studies provides an invaluable context for understanding the present and future climate system
From Our Principal
” For the first time in human history, we are capable of predicting the future climate. The problem is that our own activities will cause us to live in interesting times. “
– Philip Pogge von Strandmann
PhD ResearcherProject Title
Paleoceanographic context of organic matter deposition on the Yangtze Craton, South China during the Ediacaran Period
PhD ResearcherProject Title
Elucidating mineral dissolution and precipitation mechanisms.
My thesis will focus on the mechanisms by which minerals dissolve and precipitate as a function of the system’s distance from equilibrium. To formulate a general law by which dissolution and precipitation reaction mechanisms and rates behave at near to equilibrium conditions, two completely different minerals will be precipitated and dissolved in the lab: sepiolite, a Mg-silicate, and siderite, an Fe-carbonate.
PhD ResearcherUsing boron isotopes as a tracer of habitat and diet.
The project is to investigate the nature and variability of late Miocene climate in east and west Pacific. Furthermore, this study aims to investigate changes in the thermal structure of the Pacific Ocean during late Miocene to examine Pacific Ocean circulation. This is achieved through high resolution planktonic and benthic foraminiferal stable isotope analysis. In order to assess the reliability of these new records this study will go on to document the taxonomy and palaeobiology of Miocene tropical planktonic and benthic foraminifera in east and west Pacific and their response to times of climatic stress.
MSCIExamining lithium isotopes as a tracer of silicate weathering through a river time-series
MSCiExamining lithium isotopes as a tracer of silicate weathering rates.
“Enhanced weathering CO2 sequestration experiments at 4°C”