http://www.nercdtp.leeds.ac.uk/projects/index.php?id806. Desert aeolian sedimentary systems are sensitive to changes in a wide range of environmental variables, including climate, sea level, sediment supply and tectonic factors.
The Earth’s magnetic field, generated by turbulent convection in the liquid outer core, has reversed many times over its 3.5 billion-year history, at a present rate of about 2-3 times per million years (Stern, 2002) The last global reversal took place 780,000 years ago, leading to speculation that we are “overdue”.
The strength of Earth’s ancient magnetic field (paleointensity) is a uniquely powerful probe of the evolution of the planet on which we live, allowing constraint on Earth’s dynamics and thermal history.
A Ph.D position is available in the research area of Strong-Field and Attosecond Science, in the group of Dr. Agapi Emmanouilidou in the division of AMOPP in Physics and Astronomy at University College London.
Why do ecological communities vary in structure and dynamics across landscapes? Metacommunity theory suggests that this variation is caused by differences in species’ dispersal abilities, coupled with environmental and ecological filtering.
Late-orogenic hydrothermal activity results in the formation of quartz and carbonate vein systems in the upper crust. It is an enigma why only certain hydrothermal pulses are associated with economic gold mineralization but others are not.