Anomalous variation of the ocean’s inertial oscillations at the Hawaii shelf

The data of acoustic Doppler profilometers placed at the edge of the steep shelf of Oahu Island, Hawaii, are analyzed for the currents. The specific character of inertial oscillations is revealed in the region: strong elongation of inertial orbits, a large amount of anomalous (cyclonic) current rotation, and sharp weakening in the divergence layer of the background (low-frequency) oscillations, the strong variation of which results in significant deviations of the effective inertial frequency from its local geographical value. It is suggested that cyclonic rotation of the inertial currents is related to a strong decrease in the effective oscillation frequency of the oceanic waves on the shelf.     

Characteristics of inertial oscillations according to the experimental measurements of currents on the Russian shelf of the Black Sea

The analysis of inertial oscillations on the Gelendzhik shelf of the Black Sea is presented. Spectral characteristics of the current fields are studied based on the measurements taken by the acoustic Doppler current profiler. Strong variability of the inertial oscillation hodographs at variations in the background shear current and diverse forms of inertial oscillations measured at a fixed point at various values of the shear current are revealed. The relation between the passage of the multidirectional jets and the trains of inertial oscillations inside the jets in the studied region are established.     

Large scale interaction of seismically active tectonic provinces: The example of Southern California

A typical feature of the large scale interaction of seismic active tectonic provinces of Southern California, which is expressed in a relatively fast jump change in the stress state of the crust over 0.5 month, is revealed on the basis of a geomechanical model and the results of instrumental observations for displacements of the crust. This provides us with new possibilities for the short-term prediction of significant seismic events for a period of a week to a month.     

Studies of hydrophysical processes during monitoring of the anthropogenic impact on coastal basins using the example of Mamala Bay of Oahu Island in Hawaii

This paper presents the main results of processing the data obtained in the study of hydrophysical processes during multidisciplinary monitoring of the anthropogenic impact on the coastal basin of Mamala Bay (Oahu Island, Hawaii). The results of the hydrophysical measurements carried out in August–September of 2002–2004 using stationary moorings and dropped and towed ship sensors were analyzed as the initial data. On the basis of these measurements, spatiotemporal, statistical, and spectral characteristics of different hydrophysical parameters of the marine envrionement in the basin of Mamala Bay were calculated, including three-dimensional components of the velocity vectors, the spectra of different components of velocities, the spectra of temperature fluctuations, and the characteristics of internal waves. The variability of the temperature fields and the correlation of the tidal phenomena with the temperature measurements and fluctuations caused by internal waves were analyzed. The materials and methods of the oceanographic studies and the results of the analysis of the meteorological and hydrological conditions are presented. The results obtained are used for a multidisciplinary analysis of the satellite and sea truth data.     

An Anomalous Record-High Internal Wave Train on the Black Sea Shelf,Generated by an Atmospheric Front

Doklady Earth Sciences - This paper reports the data obtained on the anomalous train of soliton-like internal record-high waves in the Black Sea (h = ~16 m). Such a train was detected at a depth of...     

Radar Detection of Anomalous Dynamics of Perennial Heaving Mounds from the Example of the Yamal Mound/Crater in 2020

Doklady Earth Sciences - To identify heaving mounds with anomalous topography and microrelief dynamics, including slopes and fissure structures, a technique for analyzing multi-temporal radar...     

Satellite Monitoring of Burnt-out Areas and Emissions of Harmful Contaminants Due to Forest and Other Wildfires in Russia

Izvestiya, Atmospheric and Oceanic Physics - In this paper we summarize the results of the satellite monitoring of various types of wildfires, as well as emissions of carbon-containing the CO and...     

Intensive Internal Waves with Anomalous Heights in the Black Sea Shelf Area

Izvestiya, Atmospheric and Oceanic Physics - A train of internal waves ~16 m in height and 101–131 m in length, abnormally large for the Black Sea, is studied. The measurements have been...     

Some Challenges of Short-Term Earthquake Forecasting and Possible Solutions

Doklady Earth Sciences - We discuss the reasons behind the lack of efficiency of geodetic monitoring aimed at short-term forecasting of strong earthquakes. Based on the results from geomechanical...