Mon Dec 15, F. Flechtner
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Bagherbandi, Mohammad, Amin, Hadi, and Tenzer, Robert, 2025. GRACE-derived land uplift model in Fennoscandia: Assessing the impact of hydrological loading on land uplift rates and uncertainty. Journal of Geodynamics, 166:102122, doi:10.1016/j.jog.2025.102122.
• from the NASA Astrophysics Data System • by the DOI System •
@ARTICLE{2025JGeo..16602122B,
author = {{Bagherbandi}, Mohammad and {Amin}, Hadi and {Tenzer}, Robert},
title = "{GRACE-derived land uplift model in Fennoscandia: Assessing the impact of hydrological loading on land uplift rates and uncertainty}",
journal = {Journal of Geodynamics},
keywords = {Land uplift, Glacial Isostatic Adjustment, GNSS, GRACE, Satellite gravimetry, Earth observation, Remote sensing, Hydrology, Fennoscandia},
year = 2025,
month = dec,
volume = {166},
eid = {102122},
pages = {102122},
abstract = "{Studying the Glacial Isostatic Adjustment (GIA) and land uplift modeling
can be carried out utilizing geodetic observations (GNSS and
precise leveling measurements), and geophysical methods. The
Gravity Recovery and Climate Experiment (GRACE) satellite
missions' data has not been formally used in this context in
Fennoscandia. If there is insufficient coverage of offshore or
onshore data, existing estimates of GIA might be partially
biased (by means of spatial pattern and magnitude), particularly
over the Gulf of Bothnia where the land uplift rate reaches its
maximum. To inspect this issue, we incorporated the GRACE data
in estimates of the land uplift rate due to GIA. Despite
satellite gravitational information having a low resolution
({\ensuremath{\sim}}300 km) it can be used for this purpose
because the GIA in Fennoscandia has a large-scale regional
pattern. Our findings confirmed a bias in existing estimates.
According to our results, the maximum land uplift rates reach
9.1 mm/year in the northern part of the Gulf of Bothnia, while
previous estimates indicate that the maximum value is shifted
westward towards land. Since GRACE data also comprises
hydrological signals, we assessed its effect on the satellite
gravitational information by applying different hydrological
models. Our results ascertained that land uplift estimates in
Fennoscandia were not significantly affected by long-term
hydrological mass variations. According to our estimates over
the period between 2003 and 2017, the hydrological loading
effect was approximately 0.1 mm/year or less (in terms of the
RMS differences when compared to the reference land uplift
model). Hydrological signal variations (over the investigated
period of two decades) were, therefore, dominated mainly by
seasonal variations without the presence of secular trends. The
results show that the land uplift model from GRACE has some
discrepancies compared to existing models, so the main idea of
this article is to combine land and satellite data. Therefore,
we studied a combined land uplift model using GRACE and the
latest land uplift model in Fennoscandia.}",
doi = {10.1016/j.jog.2025.102122},
adsurl = {https://ui.adsabs.harvard.edu/abs/2025JGeo..16602122B},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
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