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  A reanalysis and reinterpretation of geodetic and geological evidence of glacial-isostatic adjustment in the Churchill region, Hudson Bay

Wolf, D., Klemann, V., Wünsch, J., Zhang, F.-P. (2004): A reanalysis and reinterpretation of geodetic and geological evidence of glacial-isostatic adjustment in the Churchill region, Hudson Bay, (Scientific Technical Report STR ; 04/11), Potsdam : Deutsches GeoForschungsZentrum GFZ, 49 p.
https://doi.org/10.48440/gfz.b103-04111

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 Urheber:
Wolf, Detlef1, 2, 3, Autor
Klemann, Volker1, 4, Autor              
Wünsch, Johann1, 2, 3, Autor
Zhang, Fei-Peng1, 5, Autor
Affiliations:
1Scientific Technical Report STR, Deutsches GeoForschungsZentrum, ou_9026              
21.2 Global Geomonitoring and Gravity Field, 1.0 Geodesy and Remote Sensing, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_146026              
3Gravity Field and Gravimetry -2009, Geoengineering Centres, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_146057              
41.3 Earth System Modelling , 1.0 Geodesy and Remote Sensing, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_146027              
51.1 GPS/GALILEO Earth Observation, 1.0 Geodesy and Remote Sensing, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_146025              

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Schlagwörter: Absolute gravimetry, glacial-isostatic adjustment, GPS, lineartrend analysis, mantle viscosity, sea-level indicator, tide gauge, wavelet-transform analysis
 Zusammenfassung: We review the historical, geological, tide-gauge, GPS and gravimetric evidence advanced in favour of or against continuing land uplift around Hudson Bay, Canada. After this, we reanalyse the tide-gauge and GPS data for Churchill using longer time series than those available to previous investigators. The dependence of the mean rate of relative sea-level change obtained on the length and mid-epoch of the observation interval considered is investigated by means of the newly developed linear-trend analysis diagram. For studying the shorter-period variability of the tide-gauge record, the continuous-wavelet transform is used. The mean rate of land uplift obtained from GPS is based on a new analysis using IGS solutions of GFZ. Furthermore, sea-level indicators from the Churchill region representing the relative sea-level history during the past 8000 a are included. Finally, the four types of observable are jointly inverted in terms of mantle viscosity. The optimum values are 3×10^20 Pa s and 1.6 × 10^22 Pa s for the upper- and lower-mantle viscosities, respectively.

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Sprache(n): eng - Englisch
 Datum: 2004
 Publikationsstatus: Final veröffentlicht
 Seiten: 49
 Ort, Verlag, Ausgabe: Potsdam : Deutsches GeoForschungsZentrum GFZ
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: URN: urn:nbn:de:kobv:b103-04111
DOI: 10.48440/gfz.b103-04111
 Art des Abschluß: -

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Titel: Scientific Technical Report STR
Genre der Quelle: Reihe
 Urheber:
Deutsches GeoForschungsZentrum, Herausgeber              
Affiliations:
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Ort, Verlag, Ausgabe: Potsdam : Deutsches GeoForschungsZentrum GFZ
Seiten: 49 Band / Heft: 04/11 Artikelnummer: - Start- / Endseite: 1 - 49 Identifikator: ISSN: 1610-0956