Glacial isostatic adjustment in the static gravity field of Fennoscandia

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F15%3A43923839" target="_blank" >RIV/49777513:23520/15:43923839 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1002/2014JB011508" target="_blank" >http://dx.doi.org/10.1002/2014JB011508</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/2014JB011508" target="_blank" >10.1002/2014JB011508</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Glacial isostatic adjustment in the static gravity field of Fennoscandia

Popis výsledku v původním jazyce

In the central part of Fennoscandia, the crust is currently rising, because of the delayed response of the viscous mantle to melting of the Late Pleistocene ice sheet. This process, called Glacial Isostatic Adjustment (GIA), causes a negative anomaly inthe present-day static gravity field as isostatic equilibrium has not been reached yet. Several studies have tried to use this anomaly as a constraint on models of GIA, but the uncertainty in crustal and upper mantle structures has not been fully taken into account. Therefore, our aim is to revisit this using improved crustal models and compensation techniques. We find that in contrast with other studies, the effect of crustal anomalies on the gravity field cannot be effectively removed, because of uncertainties in the crustal and upper mantle density models. Our second aim is to estimate the effects on geophysical models, which assume isostatic equilibrium, after correcting the observed gravity field with numerical models for GIA. We s

Název v anglickém jazyce

Glacial isostatic adjustment in the static gravity field of Fennoscandia

Popis výsledku anglicky

In the central part of Fennoscandia, the crust is currently rising, because of the delayed response of the viscous mantle to melting of the Late Pleistocene ice sheet. This process, called Glacial Isostatic Adjustment (GIA), causes a negative anomaly inthe present-day static gravity field as isostatic equilibrium has not been reached yet. Several studies have tried to use this anomaly as a constraint on models of GIA, but the uncertainty in crustal and upper mantle structures has not been fully taken into account. Therefore, our aim is to revisit this using improved crustal models and compensation techniques. We find that in contrast with other studies, the effect of crustal anomalies on the gravity field cannot be effectively removed, because of uncertainties in the crustal and upper mantle density models. Our second aim is to estimate the effects on geophysical models, which assume isostatic equilibrium, after correcting the observed gravity field with numerical models for GIA. We s

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DE - Zemský magnetismus, geodesie, geografie

OECD FORD obor

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Projekt

<a href="/cs/project/GAP209%2F12%2F1929" target="_blank" >GAP209/12/1929: Aproximace zemského tíhového pole kombinací parametrů odvozených inverzí měřených dat a přímým modelováním</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

JOURNAL OF GEOPHYSICAL RESEARCH: SOLID EARTH

ISSN

2169-9356

e-ISSN

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Svazek periodika

120

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

16

Strana od-do

503-518

Kód UT WoS článku

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EID výsledku v databázi Scopus

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