Ein neuer Windschreiber für kleine Windgeschwindigkeiten     

Reg. Rat Dr. Eduard Huss 《Pure and Applied Geophysics》1953,25(1):83-91

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Generalized Regularization Techniques with Constraints for the Analysis of Solar Bremsstrahlung X-ray Spectra     

Eduard?P.?KontarEmail author  Michele?Piana  Anna?Maria?Massone  A.?Gordon?Emslie  John?C.?Brown 《Solar physics》2004,225(2):293-309

Hard X-ray spectra in solar flares provide knowledge of the electron spectrum that results from acceleration and propagation in the solar atmosphere. However, the inference of the electron spectra from solar X-ray spectra is an ill-posed inverse problem. Here, we develop and apply an enhanced regularization algorithm for this process making use of physical constraints on the form of the electron spectrum. The algorithm incorporates various features not heretofore employed in the solar flare context: Generalized Singular Value Decomposition (GSVD) to deal with different orders of constraints; rectangular form of the cross-section matrix to extend the solution energy range; regularization with various forms of the smoothing operator; and preconditioning of the problem. We show by simulations that this technique yields electron spectra with considerably more information and higher quality than previous algorithms.  相似文献   

Geoelectric dimensionality in complex geological areas: application to the Spanish Betic Chain   总被引：1，自引：0，他引：1  

Anna Martí  Pilar Queralt  Eduard Roca 《Geophysical Journal International》2004,157(3):961-974

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Jabuka island (Central Adriatic Sea) earthquakes of 2003     

Davorka Herak  Marijan Herak  Eduard Prelogovi&#x;  Snjeana Marku&#x;i&#x;   eljko Markulin 《Tectonophysics》2005,398(3-4):167-180

We present analyses of one of the strongest earthquake sequences ever recorded within the Adriatic microplate, which occurred near the Jabuka island in the very centre of the Adriatic Sea. The mainshock (29 March 2003, 17:42, M_L=5.5) was preceded by over 150 foreshocks, and followed by many aftershocks, over 4600 of which were recorded on the closest station HVAR (about 90 km to the east). As the epicentre was in the open sea and due to the absence of nearby stations, we were able to confidently locate only 597 events. Hypocentral locations were computed by a grid-search algorithm after seven iterations of refining hypocentres and adjusting station corrections. Epicentres lie in a well-defined area of about 300 km², just to the W and NW of the Jabuka island. The vertical cross-sections reveal that hypocentres dip to the NE, closely matching faults from the Jabuka-Andrija fault system, as identified on the available reflection profiles in the area. The fault-plane solution of the main shock based on the first-motion polarity readings agrees well with the CMT solutions and indicates faulting caused by a S–N directed tectonic pressure, on a reverse, dip-slip fault. This is in very good agreement with the seismotectonic framework of the area. These earthquakes are important as they identify the Jabuka-Andrija fault system as an active one, which can significantly influence seismic hazard on the islands in the central Adriatic archipelago and on the Croatian coast between Zadar and Split. Along with several other sequences which occurred in the last two decades, they force us to change our notion of Adria as nearly aseismic, compact and rigid block. In fact, it turns out that recent seismicity of the Central Adriatic Sea is comparable to the seismicity of several well known earthquake-prone areas in the circum-Adriatic region.  相似文献   

Watershed Delineation and Ground Water Discharge to a Coastal Embayment   总被引：3，自引：0，他引：3  

Thomas C. Cambareri  Eduard M. Eichner 《Ground water》1998,36(4):626-634

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Abstracts     

A. Campo Bagatin  P. Farinella  P. Paolicchi  Yu. V. Barkin  P. Bonnefond  P. Exertier  Eric Bois  Sławomir Breiter  Adrian Brunini  J. Klačka  J. Kaufmannová  Marianne Lefftz  Hilaire Legros  Nina A. Solovaya  Eduard M. Pittich 《Celestial Mechanics and Dynamical Astronomy》1993,57(1-2):403-404

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A map-view restoration of the Alpine-Carpathian-Dinaridic system for the Early Miocene     

Kamil Ustaszewski  Stefan M. Schmid  Bernhard Fügenschuh  Matthias Tischler  Eduard Kissling  Wim Spakman 《Swiss Journal of Geoscience》2008,101(1):273-294

A map-view palinspastic restoration of tectonic units in the Alps, Carpathians and Dinarides reveals the plate tectonic configuration before the onset of Miocene to recent deformations. Estimates of shortening and extension from the entire orogenic system allow for a semi-quantitative restoration of translations and rotations of tectonic units during the last 20 Ma. Our restoration yielded the following results: (1) The Balaton Fault and its eastern extension along the northern margin of the Mid-Hungarian Fault Zone align with the Periadriatic Fault, a geometry that allows for the eastward lateral extrusion of the Alpine-Carpathian-Pannonian (ALCAPA) Mega-Unit. The Mid-Hungarian Fault Zone accommodated simultaneous strike-perpendicular shortening and strike-slip movements, concomitant with strike-parallel extension. (2) The Mid-Hungarian Fault Zone is also the locus of a former plate boundary transforming opposed subduction polarities between Alps (including Western Carpathians) and Dinarides. (3) The ALCAPA Mega-Unit was affected by 290 km extension and fits into an area W of present-day Budapest in its restored position, while the Tisza-Dacia Mega-Unit was affected by up to 180 km extension during its emplacement into the Carpathian embayment. (4) The external Dinarides experienced Neogene shortening of over 200 km in the south, contemporaneous with dextral wrench movements in the internal Dinarides and the easterly adjacent Carpatho-Balkan orogen. (5) N–S convergence between the European and Adriatic plates amounts to some 200 km at a longitude of 14° E, in line with post-20 Ma subduction of Adriatic lithosphere underneath the Eastern Alps, corroborating the discussion of results based on high-resolution teleseismic tomography.The displacement of the Adriatic Plate indenter led to a change in subduction polarity along a transect through the easternmost Alps and to substantial Neogene shortening in the eastern Southern Alps and external Dinarides. While we confirm that slab-pull and rollback of oceanic lithosphere subducted beneath the Carpathians triggered back-arc extension in the Pannonian Basin and much of the concomitant folding and thrusting in the Carpathians, we propose that the rotational displacement of this indenter provided a second important driving force for the severe Neogene modifications of the Alpine-Carpathian-Dinaridic orogenic system.  相似文献   

Low-Temperature Oxidation of Magnetite in Loess-Paleosol Sequences: A Correction Of Rock Magnetic Parameters     

Petrovský  Eduard 《Studia Geophysica et Geodaetica》2000,44(3):460-463

Studia Geophysica et Geodaetica -  相似文献   

Effectiveness and legitimacy of forest carbon standards in the OTC voluntary carbon market   总被引：1，自引：0，他引：1  

Merger E  Pistorius T 《Carbon balance and management》2011,6(1):4

Background  

In recent years, the voluntary over-the-counter (OTC) carbon market has reached a significant market volume. It is particularly interesting for forest mitigation projects which are either ineligible in compliance markets or confronted with a plethora of technical and financial hurdles and lacking market demand. As the OTC market is not regulated, voluntary standards have been created to secure the social and environmental integrity of the traded mitigation projects and thus to ensure the quality of the resulting carbon credits. Building on a theoretical efficiency-legitimacy framework, this study aims to identify and analyse the characteristics and indicators that determine the efficiency and organisational legitimacy of standards for afforestation/reforestation carbon projects.  相似文献   

Strongly magnetic soil developed on a non-magnetic rock basement: A case study from NW Bulgaria     

Hana Grison  Eduard Petrovský  Neli Jordanova  Aleš Kapička 《Studia Geophysica et Geodaetica》2011,55(4):697-716

The enhanced magnetic susceptibility of modern soils is assumed to have several reasons including, e.g., weathering of an iron-rich geological basement, natural fires, bacterial processes and atmospheric deposition of anthropogenic particles. We report on a case where none of the above sources of magnetic enhancement is evident: a modern soil with high magnetic susceptibility over the whole soil profile, developed on nonmagnetic limestones, in an area with no industrial activities. The surface magnetic susceptibility varies from 60 to 110×10⁻⁵ SI, while that of the rock basement is nearly zero. Moreover, significant frequency-dependent magnetic susceptibility (> 12%) suggests that superparamagnetic secondary magnetite/maghemite plays an important role. Possible mechanisms, responsible for this magnetic enhancement, are discussed.  相似文献