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On feasibility to detect volcanoes hidden under the ice of Antarctica via their "gravitational signal"

Identifikátory výsledku

  • Kód výsledku v IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F16%3A00346679" target="_blank" >RIV/68407700:21110/16:00346679 - isvavai.cz</a>

  • Nalezeny alternativní kódy

    RIV/67985815:_____/16:00470516 RIV/61989100:27350/16:86098993 RIV/00025615:_____/16:N0000020

  • Výsledek na webu

    <a href="https://doi.org/10.4401/ag-7102" target="_blank" >https://doi.org/10.4401/ag-7102</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.4401/ag-7102" target="_blank" >10.4401/ag-7102</a>

Alternativní jazyky

  • Jazyk výsledku

    angličtina

  • Název v původním jazyce

    On feasibility to detect volcanoes hidden under the ice of Antarctica via their "gravitational signal"

  • Popis výsledku v původním jazyce

    Many undiscovered volcanoes may be hidden under the thick layers of the ice of Antarctica. Hypothetic volcanoes were sought by means of the best present-day gravitational data (gravity field model EIGEN 6C4) and bedrock topography data (Bedmap2). A new previously unused method was tested. The analogy with the "gravitational signal" typical for volcanoes and other structures in other parts of the Earth is used. Various functions (not only ordinary gravity anomalies) of the disturbing geopotential were employed: Marussi tensor of the second derivatives, geopotential invariants, the strike angle and the virtual deformations. We attempted to discover if the best present-day gravitational and topographic data are of sufficient precision and resolution and how fast is the attenuation of the "gravitational signal" of a volcano with increasing depth under the ice. It is shown that there is no principal obstacle to detect volcanoes by our method. However, it appeared very quickly that our present-day attempts to discover such volcanoes could hardly be successful, mainly due to a low resolution of the existing gravity data and also due to a low resolution of the best bedrock topography of Antarctica currently available. Nevertheless, some examples of hypothetical volcanoes under the ice are given, but they are uncertain. However, the method, the main goal of this feasibility study, is ready and working.

  • Název v anglickém jazyce

    On feasibility to detect volcanoes hidden under the ice of Antarctica via their "gravitational signal"

  • Popis výsledku anglicky

    Many undiscovered volcanoes may be hidden under the thick layers of the ice of Antarctica. Hypothetic volcanoes were sought by means of the best present-day gravitational data (gravity field model EIGEN 6C4) and bedrock topography data (Bedmap2). A new previously unused method was tested. The analogy with the "gravitational signal" typical for volcanoes and other structures in other parts of the Earth is used. Various functions (not only ordinary gravity anomalies) of the disturbing geopotential were employed: Marussi tensor of the second derivatives, geopotential invariants, the strike angle and the virtual deformations. We attempted to discover if the best present-day gravitational and topographic data are of sufficient precision and resolution and how fast is the attenuation of the "gravitational signal" of a volcano with increasing depth under the ice. It is shown that there is no principal obstacle to detect volcanoes by our method. However, it appeared very quickly that our present-day attempts to discover such volcanoes could hardly be successful, mainly due to a low resolution of the existing gravity data and also due to a low resolution of the best bedrock topography of Antarctica currently available. Nevertheless, some examples of hypothetical volcanoes under the ice are given, but they are uncertain. However, the method, the main goal of this feasibility study, is ready and working.

Klasifikace

  • Druh

    J<sub>imp</sub> - Článek v periodiku v databázi Web of Science

  • CEP obor

  • OECD FORD obor

    10508 - Physical geography

Návaznosti výsledku

  • Projekt

  • Návaznosti

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Ostatní

  • Rok uplatnění

    2016

  • Kód důvěrnosti údajů

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

Údaje specifické pro druh výsledku

  • Název periodika

    ANNALS OF GEOPHYSICS

  • ISSN

    1593-5213

  • e-ISSN

    2037-416X

  • Svazek periodika

    59

  • Číslo periodika v rámci svazku

    5

  • Stát vydavatele periodika

    IT - Italská republika

  • Počet stran výsledku

    22

  • Strana od-do

  • Kód UT WoS článku

    000389932200009

  • EID výsledku v databázi Scopus

    2-s2.0-84997132430