The paper reports on the development, creation of experimental models, and field tests of new-generation geohydroacoustic measurement buoys designed to be used both independently for taking...

The results of analysis of wave modes in the ambient noise induced in the layered structure “lithosphere–hydrosphere–ice sheet” are presented. It is shown that instrumental monitoring over background...

The article presents the results of field tests of marine seismic sources and seismoacoustic areal measuring systems based on autonomous embedded buoys in Lake Ladoga under ice conditions....

Patterns of wave disturbance propagation in nonuniform media, including the layered Earth, a liquid waveguide, and a covering ice layer are studied. The velocities of different modes are estimated based on the cross-correlation function for signals set in two spatially spanned points. Experimental data are compared to numerical modeling results.

The authors have investigated the possibility of using the background seismoacoustic noise generated Scholte-type surface waves on the ocean floor in order to study the structure of the geophysical medium using passive seismoacoustic tomography. The paper presents the results of reconstructing the deep structure of the Hawaiian Islands region by processing experimental data obtained by a network of broadband ocean bottom seismographs. The solution to the inverse problem consists of two stages. First, the dispersion relations of the phase and group velocities of surface waves are estimated by analyzing the cross-correlation function of the background noise between different pairs of bottom geophones. At the second stage, the problem of inverting the estimated dispersion curves into a vertically layered elastic model of the lithosphere is solved. Comparison of the inversion results with the known velocity models of the Hawaiian Islands region demonstrates the reliability of the estimates obtained with this approach. The results also indicate the possibility of reducing the time of data acquisition in a field experiment compared to methods that use earthquake signals, which involve sounding the studied area from different directions.

A paper reviews existing and future seismohydroacoustic technologies, equipment, and novel scientific approaches to studying the Arctic Ocean. Particular attention is paid to the state of scientific and practical groundwork in the possibilities of developing passive geohydroacoustic methods for monitoring the ice-covered shelf of Russia’s northern seas. New knowledge on the structure and conditions of the formation and propagation of wave fields in the layered lithosphere–hydrosphere–ice–cover-atmosphere system generated by induced geodynamic processes has been obtained in the course of solving a separate class of problems within the fundamental scientific problem of seeking ways to build innovative, environmentally friendly geophysical technologies for delineating local heterogeneities, including hydrocarbon deposits, in ice-covered water areas.