Four-Dimensional Modeling of Recent Vertical Movements in the Area of the Southern California Uplift

VANíČEK, PETR; Elliott, Michael R.; CASTLE, ROBERT O.

doi:10.1016/b978-0-444-41783-1.50045-3

Cited by 3 publications

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“…The rate of uplift that has been suggested (perhaps exceeding 10 cm/yr) is larger by several orders of magnitude than uplift rates observed in the central and eastern U.S. (which are on the order of I mm/yr;Brown and Oliver [1976]). The only comparable phenomenon in the western U.S., except in active volcanic areas, is the Palmdale 'bulge,' which was originally described as an uplift of 15-25 cm occurring during the period between 1960-1974[Castle et al, 1976;Thatcher, 1976;Vanicek et al, 1979;Stein et al, 1979]. Castle et al argue that Palmdale rose by as much as 20 cm between 1961 and 1962.…”

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The Long Valley/Mono Basin Volcanic Complex in eastern California: Status of present knowledge and future research needs

Hermance¹

1983

Reviews of Geophysics

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The Long Valley/Mono Basin volcanic complex in eastern California is one of the few major silicic systems in western North America that have exhibited volcanic activity so recently that they may still be potentially active. Such complexes are typically associated with highly developed convective hydrothermal systems and hot spring activity at the surface. Because of the ongoing interest among the scientific community in understanding the intercoupling of shallow hydrothermal reservoirs with magmatic heat sources at depth in the crust, these volcanic complexes have been studied for many years by workers interested in a variety of geological problems. Among these are metallogenesis, the mitigation of volcanic and earthquake hazards, and the development of conventional and nonconventional forms of geothermal energy. The status of some of this work, as it relates to the Long Valley/Mono Basin volcanic complex, is reviewed by way of a progress report. Although a great deal of exciting research is presently underway, much still needs to be done to adequately characterize the tectono-magmatic elements of this volcanic system. One research technique that has not been exploited is scientific drilling to intermediate depths (2-3 km). A carefully structured research program in which scientific drilling is closely integrated with surface geological and geophysical field studies would help clarify many of the present issues surrounding this volcanic complex. For example, while many workers feel that hydrothermal magma systems are prime subjects for the study of metallogenesis, there is little evidence in existing borehole data for such processes at shallow depths beneath Long Valley. This may be because volcanism is too recent (Inyo craters and domes have C TM ages youngerthan 1000 yr). Mineralization is usually associated with older, mature (solidified?) magmatic systems. We may have, in Long Valley, an opportunity for defining the initial conditions associated with the evolution of these deposits. Long Valley caldera is the only member of this class of volcanic systems for which a quantitative caldera-scale hydrothermal model has been proposed. In addition, this region offers a unique opportunity in volcanic and earthquake hazards research. Recent tectonic deformation, seismicity patterns, and the reactivation of fumarolic activity caused the USGS to issue, on May 25, 1982, a notice that a potential volcanic hazard exists for the southwestern segment of Long Valley caldera. If, as has been proposed, magma has intruded the upper crust of this area, surface geophysics and limited borehole observations may be employed to monitor tectonic and magmatic activity associated with such a phenomenon. Finally, a surprising result of commercial drilling for geothermal energy in this area is the failure to detect directly high-temperature hydrothermal reservoirs. Their presence can be inferred from other studies--particularly those using geochemical indicators in thermal fluids. In addition, present evidence supports the possibility of ...

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The Long Valley/Mono Basin Volcanic Complex in eastern California: Status of present knowledge and future research needs

Hermance¹

1983

Reviews of Geophysics

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“…∆ερµάνης 1984, Kanngieser 1983, Fiky et al 1996, Tscherning et al 2001 και η ταυτόχρονη συνόρθωση των διαχρονικών παρατηρήσεων, όπου οι µετακινήσεις εµφανίζονται ως άγνωστες παράµετροι και προσεγγίζονται από µια αναλυτική συνάρτηση (π.χ. Vanicek et al 1979Vanicek et al , Ρωσσικόπουλος 1986Vanicek et al , 1998. Στην τελευταία αυτή αντιµετώπιση µπορεί να συµπεριληφθεί και το µοντέλο της ολοκληρωµένης γεωδαισίας, όπου συµµετέχουν ταυτόχρονα παρατηρήσεις του πεδίου βαρύτητας και εµφανίζονται ως άγνωστες παράµετροι εκτός από τις µετακινήσεις και οι µεταβολές του πεδίου βαρύτητας (Hein 1985, Rossikopoulos 1986, Collier 1988, Dermanis and Rossikopoulos 1991, Musyka 1999.…”

Section: γενικάunclassified

“…Με την περίπτωση της ολοκληρωµένης γεωδαισίας και τις εφαρµογές της στα κατακόρυφα δίκτυα θα ασχοληθούµε στο επόµενο κεφάλαιο. Vanicek et al (1979…”

Section: γενικάunclassified

“…Παραδείγµατα εφαρµογής της µεθόδου στην ανάλυση των κατακόρυφων µετακινήσεων δόθηκαν από τους Holdahl and Hardy (1977), Vanicek et al (1979). Στον πίνακα (1) δίνονται παραδείγµατα αναλυτικών συναρτήσεων οι οποίες είναι ορισµένες στον χώρο.…”

Section: η µέθοδος της αναλυτικής παρεµβολήςunclassified

“…Με την ταυτόχρονη συνόρθωση των διαχρονικών παρατηρήσεων (π.χ. Vanicek et al 1979, Heck and Malzer 1983, Holdahl and Hardy 1977, Rossikopoulos 1998, Kontny 2001 µπορούν να αναλυθούν παρατηρήσεις υψοµετρικές διαφορών, παρατηρήσεις GPS καθώς και παρατηρήσεις βαρύτητας. Το µαθηµατικό µοντέλο των εξισώσεων παρατηρήσης για όλες τις εποχές µέτρησης δίνεται από την σχέση…”

Section: η ταυτόχρονη συνόρθωση των διαχρονικών παρατηρήσεωνunclassified

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Κατακόρυφα Διαχρονικά Δίκτυα. Η Ανάλυση Διαχρονικών Παρατηρήσεων Γεωμετρικής Χωροστάθμησης Βαρύτητας Και Βάσεων GPS Στο Δίκτυο Της Βόλβης

Χατζηδάκης¹

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Το γεωειδές ………………………………………………………….. 2.3 Το ελλειψοειδές εκ περιστροφής ……………………………………. 2.4 ∆υναµικό έλξης -∆υναµικό βαρύτητας …………………………….. 2.5 ∆υναµικά υψόµετρα………………………………………………….. 2.6 Ορθοµετρικά υψόµετρα ……………………………………………... 2.7 Κανονικά υψόµετρα …………………………………………………. 2.8 Σχέση σύνδεσης των υψοµέτρων…………………………………….. 3. Γεωδαιτικές µέθοδοι προσδιορισµού των κατακόρυφων µετακινήσεων 3.1 Γενικά………………………………………………………………… 3.2 Η µέθοδος της αναλυτικής παρεµβολής……………………………... 3.3 Η µέθοδος της σηµειακής προσαρµογής………………………..…… 3.4 Η ταυτόχρονη συνόρθωση των διαχρονικών παρατηρήσεων……….. 3.5 Κατακόρυφες µετακινήσεις από επαναλαµβανόµενες µετρήσεις του πεδίου βαρύτητας………………………………………………... 4.Κατακόρυφες µετακινήσεις µε τις µεθόδους της ολοκληρωµένης γεωδαισίας 4.1 Η ολοκληρωµένη γεωδαισία και τα υψόµετρα………………………. 4.2 Οι εξισώσεις παρατήρησης των διαχρονικών υψοµετρικών διαφορών …………………………………………………………….. 4.3 Στοχαστική αντιµετώπιση των µεταβολών του πεδίου βαρύτητας στον χώρο και τον χρόνο ……………………………………………. 4.4 Κατακόρυφες µετακινήσεις σε αµετάβλητο πεδίο βαρύτητας.……… 4.5 Το µοντέλο της ολοκληρωµένης γεωδαισίας και η χρήση γεωφυσικών δεδοµένων……………………………………………... 5. Συναρτήσεις συµµεταβλητότητας του πεδίου βαρύτητας 5.1 Γενικά………………………………………………………………... 5.2 Ο υπολογισµός της συνάρτησης συµµεταβλητότητας……………….

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Comparison of Static, Kinematic and Dynamic Geodetic Deformation Models for Kutlug�n Landslide in Northeastern Turkey

Yalçınkaya

Bayrak

2005

Nat Hazards

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Being the cause of the loss of life and damaging property, landslide is an important natural hazard. Therefore, landslides have to be monitored and preventive measures taken accordingly. In Geodesy, landslides can be determined with static, kinematic and dynamic geodetic models. The aim of this study is to develop a dynamic geodetic model for landslides and compare it with static and kinematic geodetic models. A study area was selected in the Northeastern Black Sea Region of Turkey where landslides are the most effective natural hazard. Movements were determined with static, kinematic and dynamic geodetic models using geodetic, geologic and geophysical measurements made in the study area. Groundwater levels changes were regarded as causative forces in the formulation of the dynamic model. The dynamic model delivered more detailed information (direction, values, velocity, acceleration of movements) about landslide movements. It is possible to formulate more realistic strategies about prevention of landslides by using this information. As a result, it can be suggested that dynamic geodetic models are more useful in landslide studies.Natural Hazards (2005) 34: 91-110 Ó Springer 2005

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Four-Dimensional Modeling of Recent Vertical Movements in the Area of the Southern California Uplift

Cited by 3 publications

References 4 publications

The Long Valley/Mono Basin Volcanic Complex in eastern California: Status of present knowledge and future research needs

The Long Valley/Mono Basin Volcanic Complex in eastern California: Status of present knowledge and future research needs

Κατακόρυφα Διαχρονικά Δίκτυα. Η Ανάλυση Διαχρονικών Παρατηρήσεων Γεωμετρικής Χωροστάθμησης Βαρύτητας Και Βάσεων GPS Στο Δίκτυο Της Βόλβης

Comparison of Static, Kinematic and Dynamic Geodetic Deformation Models for Kutlug�n Landslide in Northeastern Turkey

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