Postdoc position (f_m_x) – High resolution global gravity field modeling
GFZ Helmholtz Centre for Geosciences
Homepage: https://www.gfz.de
The Earth’s gravity field can be mapped globally based on satellite observations and surface gravity measurements. However, the spatial resolution is limited due to the band-limited spectral content of the input data. The DFG-funded GRAV4GEO project aims to expand the resolution of global gravity field models beyond their limits using a forward gravity modelling technique based on very high-resolution digital elevation data and laterally varying mass density information (instead of commonly used averaged density values). Such an approach allows for complementing the medium to very short wavelength information of the global gravity field. GRAV4GEO aims at developing topographic gravity field models in terms of ellipsoidal and spherical harmonic coefficients for the Earth’s upper crust, which represents an important part of the entire gravitational potential of the Earth.
Your responsibilities:
*Development of new input data files: Merging global density files for crust and upper crust, replacing density grids where known regional density files exist
*Validation, adaption, optimization of existing software written in C++ and Fortran
*Preparation and update of a user manual for the developed software
*Generation of global high resolution topographic gravity field models in terms of ellipsoidal harmonics based on merged crustal density and digital elevation data
*Collaboration with colleagues working in the field of 3D gravity modelling (e.g., using IGMAS + software) and International Height Reference Frame studies
*Presenting the results of your work on related geoscientific conferences and to publish scientific results in highly-ranked international journal
Your qualification and skills:
*Master`s degree or equivalent and a PhD in geodesy, (geo-)physics, mathematics or a related discipline
*Solid background in potential theory and preferably experience in global gravity field modelling
*Strong foundation in forward gravity modelling and related data analysis
*Demonstrated programming skills in C++ and FORTRAN and editing source codes written in these languages
*Familiarity with computational techniques of high performance massive parallel computing in Linux Environment e.g., on the basis of the Message Passing Interface (MPI)
*Ability to work independently
*Ability for and willingness to work in a multidisciplinary team and to communicate with collaborators
*Proficiency in spoken and written English
What we offer:
*Ambitious and varied tasks in a dynamic and international research environment
*State-of-the-art equipment
*Public service benefits
*Extensive training opportunities
*Professional career advice offered by our in-house Career-Centre
*Flexible working hours and conditions
*Support with finding a good work-life balance offered by benefit@work
*Institute day-care centre on site
*Working at the Albert Einstein science park on the Telegrafenberg in Potsdam
*Work place within walking distance of Potsdam main train station, or just a short ride on the shuttle bus
Start date: As soon as possible
Fixed term; 18 months
Please follow the instructions given on https://www.gfz.de/karriere/stellenangebote/details/10251.
The deadline is 26th of March, 2025.