Geodetic measurements and horizontal crustal movements in the rift zone of NE-Iceland
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Abstract
Based on the special geodetic network set up by Niemczyk and Emschermann in 1938 in order to determine horizontal movements of the Earth's crust in the fissure area of the neo-volcanic zone of NE-Iceland, a number of repeated measurements were carried out from 1965 to 1977. In this article, modern geodetic measuring techniques and the (constantly improving) positional accuracy achieved are described; this is followed by an evaluation showing significant crustal movements in the riftzone. In the period of 1965 to 1971, movements in the total area of approximately 110 km from east to west were restricted to compressions, whereas afterwards, and in particular since 1975, expansions of up to 2 m/km have occurred in the central rift area. At present, this expansion is largely compensated by compression in the peripheral areas of up to 0.05 m/km, so that between 1971 and 1977 a total east-west expansion of the neovolcanic zone of only about 0.4 m has resulted over a distance of about 90 km.
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References
Gerke, K. (1967) Ein Beitrag zur Bestimmung rezenter Erdkrustenbewegungen. In. Festschrift zum 70. Geburtstag von Professor Dr.Ing. Walter GroBmann, pp. 66-78. Wittwer, Stuttgart
Gerke, K. (1974) Crustal movements in the Myvatn- and in the Thingvallavatn-area, both horizontal and vertical. In: Kristjansson, L. (Ed.) Geodynamics of Iceland and the North Atlantic Area, pp. 263-275. Reidel, Dordrecht
Gerke, K., Moller, D., Ritter, B. (1978) Geodatische Lagemessungen zur Bestimmung horizontaler Krustenbewegungen in NordostIsland. In: Festschrift fur Walter Hopcke zum 70. Geburtstag, pp. 23-33. Lehrstilhle fur Geodasie, Photogrammetrie und Kartographie an der TU Hannover
Heumann, F.W. (1972) Untersuchungen im geodatischen Sondernetz in Nordost-Island zu Messungen von 1938 und 1965. Dissertation Technische Universitat Braunschweig
Kuntz, E., Moller, D. (1971) Gleichzeitige elektronische Entfernungsmessungen mit Licht- und Mikrowellen. Alig. Vermessungsnachrichten 78:254-266
Niemczyk, O. (1943) Spalten auf Island. Wittwer, Stuttgart
Pelzer, H. (1971) Zur Analyse von Deformationsmessungen. Deutsche Geodatische Kommission Reihe C, Munich 164
Pelzer, H. (1974) Neuere Ergebnisse der statistischen Analyse von Deformationsmessungen. XIV Intern. Kongres der Vermessungsingenieure, Inv. Paper Nr 608.3, Washington
Saemundsson, K. (1974) Evolution of the axial rifting zone in northern Iceland and the Tjornes fracture zone. Bull. Geol. Soc. Am. 85:495-504
Spickernagel, H. (1966) Hohenmessungen in Nord-Island. Mitt. Markscheidewesen 73:139-152