Unifying the Irish Vertical Datum with the Normaal Amsterdams Peil (NAP)
Citation:
Sajjadi, Sajjad, Unifying the Irish Vertical Datum with the Normaal Amsterdams Peil (NAP), Trinity College Dublin. School of Natural Sciences, 2020Download Item:
Abstract:
The local gravity potential value on Malin-Head tide gauge station in Ireland is
derived from gravimetric and geometric geoid undulations. The geometric geoid
undulations are obtained from GNSS and levelling data. In contrast, the gravimetric
geoid undulations are computed based upon their long-wavelength components
using the GOCE gravity field model, and their short-wavelength components
using the terrestrial data through the Remove-Compute-Restore technique. The
potential value obtained from the combination of the satellite-only gravity field
model GOCO06s up to degree/order 245, and terrestrial + EGM2008 data for the
local tide-gauge station in Malin-Head, is computed as 62 636 858.273 m2/s2, and
is recommended as the present best estimate value in Ireland. The local gravity
potential value on Malin-Head tide gauge station differs by 0.363 m2/s2 from the
gravity potential value of EGG2015, (62 636 857.91 m2/s2), and is equivalent
to height differences equal to 0.034 m above Normaal Amsterdams Peil (NAP)
datum.
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limerick institute of technology
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https://tcdlocalportal.tcd.ie/pls/EnterApex/f?p=800:71:0::::P71_USERNAME:SAJJADISDescription:
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Author: Sajjadi, Sajjad
Advisor:
Edwards, RobinPublisher:
Trinity College Dublin. School of Natural Sciences. Discipline of GeologyType of material:
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