Pozivamo van na predavanje dr. sc. Vegarda Ophauga s Norwegian University of Life Sciences. koje će održati u četvrtak, 29. veljače 2024., s početkom u 12:15 u učionici B3-17.
Predavanje: Research in geodetic oceanography at the Norwegian University of Life Sciences
Predavanje će se moći pratiti i on-line putem poveznice: https://meet.google.com/fwi-foqh-pjs
Kratki sažetak predavanja:
Geoid and mean sea level form important quantities in both oceanography and geodesy. Independent oceanographic and geodetic measurements and modeling of similar ocean quantities act as each other’s buddy check, where their agreement increases confidence in the results. The last decade has seen a rapid development of geodetic observations and modeling, e.g., new gravity data and modern geoid computation techniques, new-generation altimetry satellites and dedicated coastal altimetry products. Using the Norwegian coast as an example, this talk concerns the extent of which these developments improve our understanding of regional sea level, dynamics, and gravity field.
O predavaču:
I am a geodesist with research interests in gravity field modeling, geoid computation, satellite and terrestrial gravimetry, and satellite altimetry, with applications to sea-level science, ocean dynamics, geodynamics, glaciology, and climatology. During my PhD studies, I was mainly involved in the GOCODYN project (2014-2018), which investigated how recent developments within geodesy can improve our understanding of sea level, ocean dynamics, and gravity field in the Norwegian coastal zone. It encompassed various topics such as optimal combination of recent satellite and regional gravity data, dedicated coastal altimetry products, modern geoid computation techniques, and the observation and modeling of temporal gravity variations due to postglacial rebound.
Currently, I am working with Christian Gerlach and Kristian Breili (and other external partners) on investigating different approaches to error propagation in geoid computation, as well as the combination of sea-level observations from various sensors, such as sea-level recorders, new-generation altimetry satellites, and unmanned surface vehicles (USVs). We supervise the SEGREF project (2021-) of PhD candidate Matea Tomić, investigating geoid computation, error budgeting and combination strategies for different types of geodetic and oceanographic observations (including new-generation SAR altimetry) for determining a transformation between chart datum and NN2000. Since 2004, the Department of Geomatics has an FG5-type absolute gravimeter at its disposal, which has been used in various observation campaigns over the years, with main applications to postglacial rebound and glaciology studies. Recent research activities within terrestrial gravimetry included supervision of the HYDROGRAV (2019-2023) project of PhD candidate Brian Bramanto, which concerned hydrological contributions to terrestrial gravity measurements.
