|From||"Roger Brugge" <email@example.com>|
|Date||Fri, 22 Mar 2013 15:02:08 +0000|
Forwarded from CLIMLIST... Three funded PhD positions in the Glacial Dynamics Group at the Department of Physics and Physical Oceanography, Memorial University of Newfoundland, are currently available: (Colleagues are asked to bring this to the attention of competent students who might be interested in these projects.) 1) Coupled ice and climate system modelling with a focus on high frequency variability/instability. We know the climate system jumped around a lot during the last glacial cycle, but models have yet to fully capture such climate system variability. This project will focus on the well documented Heinrich event 1 to Younger Dryas interval. It will examine sensitivity of climate response to both meltwater injection chronologies and the numerical representation of relevant processes. This project also includes the following sub-project: Introduction of sub-grid stochastic parametrizations to improve the representation of turbulent processes in low resolution GCMs for long time-scale modelling. Results will be compared against those of higher resolution models. 2) Analysis of high-frequency feedbacks in the glacial system between: ice streaming - basal hydrology - grounding line displacement - calving. This project will quantify bounds on potential instabilities in the system for the Antarctic ice sheet. The introduction of stochastic components will be considered. It will bound Meltwater Pulse-1a contributions from Antarctica as well as potential future contributions to "abrupt" sealevel change. This project will also entail calibration of the basal hydrology component of the MUN glacial systems model. 3) Inversion of present-day North American sediment distribution. This PhD project will invert the present-day distribution of glacially transported sediments over North America to infer the history of sediment production and transport. It will build on recently completed work on erosion and sediment transport model development (<http://dx.doi.org/10.1016/j.quascirev.2013.02.017>). It will also evaluate the extent to which the existing sediment distribution can be used to further constrain past glacial evolution and will test the regolith hypothesis for the origin of the mid-Pleistocene transition. This project will further examine the impact of fully coupled subglacial hydrology, sediment production/transport/deposition, and basal drag physics on both long-term ice-sheet evolution and high-frequency ice sheet dynamics, in collaboration with project 2 above. Applications are invited from candidates with an interest in glaciology, numerical modelling, continuum mechanics, climate modelling, and/or Earth systems science. Applicants must have achieved a BSc or Masters's degree in physics, geophysics, applied mathematics, meteorology, oceanography, or closely related areas. Applicants must also be interested in working in a collaborative environment on computationally intensive projects. Required skills: -Some experience in using FORTRAN or C, and analysis packages such as OCTAVE/MATLAB -Knowledge of general physics (even better with understanding of fluid dynamics and/or atmospheric/ocean physics) -Fluency in relevant maths (linear/matrix algebra and differential equations; statistics is very advantageous) The group has a dedicated 540 core cluster (to be doubled in 2014) and access to further computational resources through ACEnet. Associated benefit: the spectacular natural environment of Newfoundland, Canada Details of graduate studies in Physics and Physical Oceanography at Memorial University can be found at <http://www.mun.ca/physics/grad/> Interested students should contact: Lev Tarasov Canada Research Chair in Glacial Dynamics Modelling Department of Physics and Physical Oceanography Memorial University of Newfoundland St. John's, NL A1B 3X7 <firstname.lastname@example.org> <http://www.mun.ca/physics/people/faculty/tarasov.php> include the following: 1. A cover letter including their name, academic status and contact details, as well as the names and contact details of two or their faculty advisers from whom confidential letters may be sought. 2. A statement of interest including long-term academic plans, research interests,... 3. A short resume/CV, including a list of courses taken, and grades. 4. A self evaluation of strong and weak research skills, along with likes and dislikes associated with research and modelling. This electronic communication is governed by the terms and conditions at http://www.mun.ca/cc/policies/electronic_communications_disclaimer_2012.php
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