The stability criterion for downward continuation of surface gravity data with various spatial resolutions over Ireland
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F21%3A10437066" target="_blank" >RIV/00216208:11320/21:10437066 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=8bQPimk5pL" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=8bQPimk5pL</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s11200-020-0769-7" target="_blank" >10.1007/s11200-020-0769-7</a>
Alternative languages
Result language
angličtina
Original language name
The stability criterion for downward continuation of surface gravity data with various spatial resolutions over Ireland
Original language description
The differences between local and reference geopotential values are the fundamental quantities of interest in the geodetic boundary value problem approach for connecting independent height reference frames. The local gravity potential values are usually derived from gravimetric and geometric geoid undulations. In determining the short-wavelength components of the gravimetric geoid, a harmonic or analytical downward continuation of the external harmonic functions of gravity to the geoid is necessary. This study analyses the stability of the Poisson downward continuation technique with respect to varying the spatial resolution of surface gravity data in Ireland in order to estimate an effective grid resolution on this reduction. Results of the study show that the minimum range of 500-m resolution provides an unconditionally stable solution to downward continuation without the need for regularisation of the computation algorithm. In this case, downward continued data contribute from -13 to 12 mm to geoid heights and from -0.128 to 0.118 m(2)s(-2) to local gravity potential value at Malin-Head tide gauge station in Ireland.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10500 - Earth and related environmental sciences
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Studia Geophysica et Geodaetica
ISSN
0039-3169
e-ISSN
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Volume of the periodical
65
Issue of the periodical within the volume
3-4
Country of publishing house
CZ - CZECH REPUBLIC
Number of pages
16
Pages from-to
219-234
UT code for WoS article
000692630800001
EID of the result in the Scopus database
2-s2.0-85114135598