Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Yosra Afrasteh"'
Water levels from hydrodynamic models typically lack an absolute vertical reference, and can thus not be linked directly to digital elevation models to assess coastal floodrisks. Instead, most workarounds rely on tide gauges that are connected to the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9910b914ce10da9c7c53ddbf938f3a80
https://doi.org/10.5194/egusphere-egu23-1539
https://doi.org/10.5194/egusphere-egu23-1539
Autor:
Lennart Keyzer, Julie Pietrzak, Mirjam Snellen, Caroline Katsman, Firmijn Zijl, Yosra Afrasteh, Henrique Guarneri, Martin Verlaan, Roland Klees, Cornelis Slobbe
In the face of climate change and changing sea levels, it is important to understand the different drivers of sea-level variability. Tides and atmospheric forcing are the major drivers of sea-level variability, while steric contributions are often ne
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3bdd36ddf2fc7bb1e2c3e3ba7f389937
https://doi.org/10.5194/egusphere-egu23-11395
https://doi.org/10.5194/egusphere-egu23-11395
Publikováno v:
Geodesy and Cartography, Vol 43, Iss 1 (2017)
Global gravity models are being developed according to new data sets available from satellite gravity missions and terrestrial/marine gravity data which are provided by different countries. Some countries do not provide all their available data and t
Externí odkaz:
https://doaj.org/article/b3581cc796ad47a6a7b0202b3d132d87
Autor:
Lennart Keyzer, Julie Pietrzak, Mirjam Snellen, Caroline Katsman, Firmijn Zijl, Yosra Afrasteh, Henrique Guarneri, Martin Verlaan, Roland Klees, Cornelis Slobbe
The position and properties of a river plume strongly depend on the wind conditions. Upwelling-favourable winds force the plume offshore, while the freshwater layer thins. Downwelling-favourable winds confine the plume against the coast, resulting in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ed099b23471f583f9df53057340d1322
https://doi.org/10.5194/egusphere-egu22-5768
https://doi.org/10.5194/egusphere-egu22-5768
Autor:
Yosra Afrasteh, Cornelis Slobbe, Martin Verlaan, Martina Sacher, Roland Klees, Henrique Guarneri, Lennart Keyzer, Julie Pietrzak, Mirjam Snellen, Firmijn Zijl
A study by Afrasteh et al. (2021) has shown that combining model-based hydrodynamic leveling data with data of the Unified European Leveling Network (UELN) has great potential to improve the quality of the European Vertical Reference Frame (EVRF). In
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::475c579e657f8f256b5fa2e838362df5
https://doi.org/10.5194/egusphere-egu22-6136
https://doi.org/10.5194/egusphere-egu22-6136
Publikováno v:
Advances in Geosciences, Vol 50, Pp 65-75 (2020)
Advances in Geosciences, 50
Advances in Geosciences, 50
Covariance determination as the heart of Least Squares Collocation gravity field modeling is based on fitting an analytical covariance to the empirical covariance, which is stemmed from gravimetric data. The main objective of this study is to process
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ee4911808174aad6f70ceec9fabc024b
https://www.adv-geosci.net/50/65/2020/adgeo-50-65-2020.pdf
https://www.adv-geosci.net/50/65/2020/adgeo-50-65-2020.pdf
Publikováno v:
Studia Geophysica et Geodaetica. 63:191-214
The aim of this study is to determine an accurate geoid model for Iran based on the Least Squares Collocation method in the framework of the Remove — Compute — Restore technique. In areas suffering from a lack of homogeneous and accurate gravity
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4c0f1215443fce15d2ab970f8a1ab1df
https://doi.org/10.1007/s11200-018-0116-4
https://doi.org/10.1007/s11200-018-0116-4
Autor:
Roland Klees, Martin Verlaan, Cornelis Slobbe, Mirjam Snellen, Firmijn Zijl, Martina Sacher, Yosra Afrasteh, Lennart Keyzer, Julie D. Pietrzak, Henrique Guarneri
Model-based hydrodynamic leveling allows transferring heights between tide gauges by means of model-derived mean water level (MWL) differences between them. In this study, we aim to exploit the technique to improve the quality of the European Vertica
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1eb75171f4243914973e2f8a9057510c
https://doi.org/10.5194/egusphere-egu21-12598
https://doi.org/10.5194/egusphere-egu21-12598
Autor:
Firmijn Zijl, Martin Verlaan, Mirjam Snellen, Roland Klees, Henrique Guarneri, Yosra Afrasteh, Cornelis Slobbe, Lennart Keyzer, Inger Bij de Vaate, Julie D. Pietrzak
Tidal constituents obtained from satellite radar altimeter derived water levels are widely used for ocean-related applications. However, in coastal waters, the tidal signal's complexity increases due to non-linear interactions between tidal constitue
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::98e0af9863bfab20a3e1e0fb1ee22953
https://doi.org/10.5194/egusphere-egu21-15412
https://doi.org/10.5194/egusphere-egu21-15412
Autor:
Cornelis Slobbe, Martin Verlaan, Mirjam Snellen, Caroline A. Katsman, Lennart Keyzer, Tannaz H. Mohammadloo, Julie D. Pietrzak, Roland Klees, Henrique Guarneri, Yosra Afrasteh
Publikováno v:
Proceedings of Meetings on Acoustics 2021, 44(1)
The sound speed provides insight in ocean properties, as it depends on depth, temperature and salinity. Here, we propose a method to invert sound speed profiles (SSPs) from multibeam echosounder (MBES) measurements, providing a SSP for every ping. Us
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f4ac96ec49ae9e90cf66b76f870edf47
https://doi.org/10.1121/2.0001508
https://doi.org/10.1121/2.0001508