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2. Movement tendencies in the Moravia region: kinematical model

Creator:
Pospíšil, Lubomil, Otakar Švábenský, and Josef Weigel
Format:
print, bez média, and svazek
Type:
article, články, model:article, and TEXT
Subject:
Geologie. Meteorologie. Klimatologie, geodezie, GPS (navigační systém), geofyzika, geodesy, GPS (navigation system), geophysics, Morava (Česko), Moravia (Czechia), kinematic model, 7, and 551
Language:
English
Description:
The Moravia territory has been the subject of geokinematic investigation within scope of several realized research projects and repeated GPS campaigns since 1992. The monitoring has been concentrated on all the Moravia region as well as on particular areas of interest concerning the eventual possible geodynamic changes (Králický Sněžník Massif, Diendorf-Čebín Tectonic Zone (DCTZ) and others). At present time all the territory is covered by several tenths of permanent and epoch GNSS stations. Long observation time series at permanent stations alone are not sufficient for delivering the regional velocity field of sufficient density. On the other hand, epoch stations are more densely spread but periods of repeated observations are less frequent and often the data processing is not homogeneous. In the paper the preliminary kinematic model is briefly described which gives for the first time the general view of movement tendencies at the region of Moravia. On base of long-term monitoring it shows that the Southern Moravia region is more active then it was supposed., Lubomil Pospíšil, Otakar Švábenský and Josef Weigel., and Obsahuje bibliografii
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

3. Recent local geodynamic processes in the Penola Strait - Lemaire Channel fault area (West Antarctica)

Creator:
Savchyn, Ihor, Tretyak, Korneliy, Hlotov, Volodymyr, Shylo, Yevhenii, Bubniak, Ihor, Golubinka, Iurii, and Nikulishyn, Volodymyr
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
recent geodynamic processes, static GNSS survey, geodynamic polygon, geological structure, and kinematic model
Language:
English
Description:
We present the crustal deformation field in the Penola Strait – Lemaire Channel fault area (West Antarctica), based on the analysis of the 5 seasonal cycles of static GNSS survey. This 5 GNSS campaigns were conducted with approximately a 16-year interval from 2003 to 2019. The analyses indicate that average linear velocities of horizontal movements are multidirectional but no larger than 1 – 2 mm/yr. Average linear velocities of vertical movements are no larger than ±3 mm/yr. In the present work scheme of vertical and horizontal movements has been drawn out. The obtained results correlate well with the movements of the surrounding GNSS stations. Based on the analysis of spatial distribution of the Earth’s surface dilatation velocity the zones of extreme compression and expansion values were revealed. The analyses of spatial distribution of the Earth’s surface total shear velocity indicate that the studied region is horizontally heterogeneous. Based on the analysis of obtained results, a new kinematic model of fault area was developed. The possibility of using static GNSS survey to study recent local geodynamic processes in Antarctica has been demonstrated.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public