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Horizontal crustal motion in the central and eastern Mediterranean inferred from Satellite Laser Ranging measurementsFour campaigns to acquire Satellite Laser Ranging (SLR) measurements at sites in the Mediterranean region have been completed. These measurements to the LAGEOS satellite, made largely by mobile systems, cover a time span beginning in November 1985 and ending in June 1993. The range data from 18 sites in the central and eastern Mediterranean have been simultaneously analyzed with data acquired by the remainder of the global laser tracking network. Estimates of horizontal motion were placed into a regional, northern Europe-fixed, kinematic reference frame. Uncertainties are on the order of 5 mm/yr for sites having at least four occupations by mobile systems and approach 1 mm/yr for permanently located sites with long histories of tracking. The resulting relative motion between sites in the Aegean exhibit characteristics of broadly distributed pattern of radial extension, but at rates that are about 50% larger than those implied from studies of seismic strain rates based on seismicity of magnitude 6 or greater or across the region. The motion estimated for sites in Turkey exhibit velocity components associated with the westward motion of the Anatolian Block relative to Eurasia. These results provide a present-day 'snapshot' of ongoing deformational processes as experienced by the locations occupied by SLR systems.
Document ID
19950047067
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Smith, David E.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Kolenkiewicz, Ron
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Robbins, John W.
(Hughes STX Corporation Greenbelt, MD, United States)
Dunn, Peter J.
(Hughes STX Corporation Greenbelt, MD, United States)
Torrence, Mark H.
(Hughes STX Corporation Greenbelt, MD, United States)
Date Acquired
August 16, 2013
Publication Date
September 1, 1994
Publication Information
Publication: Geophysical Research Letters
Volume: 21
Issue: 18
ISSN: 0094-8276
Subject Category
Geophysics
Accession Number
95A78666
Distribution Limits
Public
Copyright
Other

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