A study was done on the morphology of marine planktonic animals, Chaetognatha (arrow worms), taken during sea expeditions from the regions without the influence of geophysical activity, from shallow-water volcanic bays and deep-water geophysically active regions. It was discovered that among the chaetognaths from geophysically active regions there was a large number of animals (up to 95%) with ...

The Kalman-Bucy method is here analized and applied to the solution of a specific filtering problem to increase the signal message/noise ratio. The method is a time domain treatment of a geophysical process classified as stochastic non-stationary. The derivation of the estimator is based on the relationship between the Kalman-Bucy and Wiener approaches for linear systems. In the present work we...

hen marine geophysical measurements reach resolutions of ten to hundreds of meters over 1000-km regions, a new realm of analysis is opened. Such data did not exist prior to Seasat in 1978. However, the value of these data has been neglected for almost two decades. The reasons are many: Star Wars, modeler indifference, fear of a new form of data where empiricism reigns, and numerical model mysti...

Foreword The Slovak National Committee for IUGG is pleased to present the second Slovak National Report to IUGG which should provide a concise summary of the geophysical and geodaetic research, and results accomplished in the period of 1999 – 2002 in the Slovak Republic. The Report consists of partial reports to five associations – IAG, IAGA, IAHS, IAMAS and IASPEI. The reports to associations ...

Sinkholes in dolomitic areas are notoriously difficult geophysical targets, and selecting an appropriate geophysical solution is not straightforward. Electrical resistivity imaging, or tomography (RESTOM) is well suited to mapping sinkholes because of the ability of the technique for detecting resistive features and discriminating subtle resistivity variations. RESTOM surveys were conducted at ...

[1] We introduce a new approach to the joint inversion of multimodal geophysical data using Gramian spaces of model parameters and Gramian constraints, computed as determinants of the corresponding Gram matrices of the multimodal model parameters and/or their attributes. We demonstrate that this new approach is a generalized technique that can be applied to the simultaneous joint inversion of a...

In the last decade several techniques have been developed to enhance geophysical data in order to extract subtle features that reflect the structural geology of the area. These techniques include curvelet, ridglet and wavelet analysis. Although these techniques provide a powerful tool in extracting linear features from geophysical data, they lack the power to resolve curvilinear or circular fea...