Elizaveta Khimchenko

Institute of Oceanology. PP Shirshov Russian Academy of Sciences · Ocean acoustics Laboratory

The paper presents field observations of internal waves at the Gelendzhik polygon from 14– 23 June 2023. The measurements were taken simultaneously on four moored thermochaines, installed at a depth of approximately 23 m. Currents were recorded, and the water column was vertically profiled with measurements of temperature, conductivity, and dissolv...

The article presents observations of near-inertial internal waves (NIWs) in the slope waters of the Black Sea in winter and summer. Rotary spectral analysis of a time series of sea current velocity measurements revealed the prevailing anticyclonic component of the motions near the local inertial frequency f. The clockwise rotation of the velocity v...

The results of studies of internal waves in the shelf zone of the Black Sea in the water area near the mouth of the Kodor River, conducted in June 2021, are presented. Spatial surveys were carried out with ADCP “Rio Grande 600 kHz”, which revealed the main characteristics of currents and the presence of internal waves generated by the river inflow...

The article is dedicated to the anniversary of Andrey Ninelovich Serebryany, Doctor of Physical and Mathematical Sciences, Principal Scientist of the Laboratory of Ocean Acoustics, Shirshov Institute of Oceanology, Russian Academy of Sciences. Serebryany A. N. – a wellknown specialist in the study of internal waves on the ocean shelf, the author of...

Data on the generation of soliton-like internal waves by a mesoscale eddy in the region of the Barents Sea near Cape Svyatoi Nos, which is widely known for its dynamic activity, are presented. The results are based on analysis of satellite optical (Sentinel-2 MSI) and radar (Sentinel-1 SAR) images obtained sequentially on August 8 and 9, 2021. A de...

Data on generation of soliton-like internal waves by a mesoscale eddy in the region of the Barents Sea near Cape Svyatoy Nos, widely known for its dynamic activity, are presented here. The results are based on the analysis of satellite optical (Sentinel-2 MSI) and radar (Sentinel-1 SAR) images obtained sequentially on August 8 and 9, 2021. A detail...

The field of internal waves in the Black Sea is quite significant. The Black Sea shelf is of particular interest, but it has not been studied enough in some specific regions. For example, a narrow and steep shelf of Abkhazia has been poorly explored. Particularly unexplored are the actual parameters and causes of the generation of internal waves in...

This observational study is concerned with the seasonal variability of near-inertial internal waves (NIWs) in the central part of the Black Sea. Rotary spectral analysis of the nearly year-long time series of the sea current velocity measurements at 100 m and 1700 m revealed the prevailing anticyclonic component of the motions near the local inerti...

The results of the analysis of data on observation of short-period internal waves on the northeastern shelf of the Black Sea in June 2018 are presented. The study area is distinguished by a narrow shelf with a sharp drop in depths, the bottom slope is 23°. The measurements were carried out from the stationary marine platform of The Institute of Eco...

The short communication presents the results of the 17th School on Ocean Acoustics known as “L.M. Brekhovskikh School-Seminar” held online from October 19 to 23, 2020. The conference was combined with the XXXIII session of the Russian Acoustic Society. The conference was attended by 138 researchers from 25 research institutes form Russia, Abkhazia,...

The results of investigations into internal waves on a narrow steep shelf of the northeastern coast of the Black Sea are presented here. To measure the parameters of internal waves, the spatial antenna of three autonomous line temperature sensors were equipped in the depth range of 17 to 27 m. In observations that lasted for 10 days, near-inertial...

The results of the first observations of mode 2 internal waves in the Black Sea are presented. The measurements were carried out on the Crimean shelf from the MGI platform in July 2011. In the period after the sweep, when measurements were taken, firstly mode 1 inertial internal waves were observed, and then mode 2 one. The oscillations of mode 2 w...

The results of the first observations of mode 2 internal waves in the Black Sea are presented. The measurements were carried out on the Crimean shelf from the MGI platform in July 2011. In the period after the sweep when the measurements were performed, mode 1 inertial internal waves were observed first and then mode 2. The oscillations of mode 2 w...

Приведены результаты исследования цуга аномально больших для Черного моря внутренних волн с высотами ~16 м и длинами 101–131 м. Измерения проводились в акватории вблизи г. Геленджик с помощью буксируемого акустического доплеровского профилометра течений (ADCP), гидрологического мини-зонда «RBR concerto», заякоренной термисторной цепочки, а также пу...

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 conducted in the water area near Gelendzhik using a towed Acoustic Doppler Current Profiler (ADCP), an RBR concerto hydrological miniprobe, and a moored thermistor string and applying the spatial spectral ana...

The paper provides an overview of long-term studies of internal waves on the northeastern shelf of the Black Sea. Examples of intense internal waves have been identified over an almost 15-year observation period. A description of the processes that cause their generation on the basis of the field observations is given. (13) (PDF) Intense internal...

Анализируются и обобщаются результаты наблюдений за внутренними волнами на крымском и кавказском шельфах Черного моря, проведенных в период с 2011 по 2016 гг. Измерения велись на заякоренных станциях, оснащенных цепочками автономных датчиков температуры, а также при помощи вертикального профилирования водной толщи зондом miniSVP и доплеровским акус...

Сообщение о XVI Школе-семинаре имени академика Л.М. Бреховских «Акустика океана», прошедшем в Институте океанологии им. П.П. Ширшова РАН c 29 мая по 1 июня 2018 г. В основные задачи школы-семинара входило представление и обсуждение новых результатов, достижений, приоритетов и современной проблематики российских исследований в области акустики океан...

The paper presents research results on sound velocity variability in the water column based on long-term measurements conducted on stationary platforms on the Crimean and southeastern shelves of the Black Sea in the summer–fall seasons. Measurements consisted of long-term hourly soundings with a miniSVP sound velocity probe, continuous temperature...

The data of observations of the approach to the coastal zone of the local hydrological front which appears on the sea surface in the form of a foam band rapidly approaching the shore are discussed. The appearance of a foam strip in the coastal zone of Abkhazia on September 18, 2016 was a forerunner of the strengthening of the northwestern coastline...

Internal standing waves (seiches) in the South Aral Sea are studied for the first time. The study, based on numerical simulations and field data, focuses on two different campaigns: the first in autumn 2006, when the stratification was weak and there was a mild prevailing northeasterly wind, and the second in autumn 2013, when the stratification wa...

This article is based on field measurements on the lake Balaton (Hungary) during the three days: 10, 11, and 12 September 2008. The expedition was performed with the aim to test recently developed ultraviolet (UV) fluorescent portable lidar UFL-8 in natural lake waters and to validate it by contact conventional measurements. We had opportunity to c...

The results of observations of mode-2 internal waves on the shelf of the tide-free Black Sea are presented. Observations were carried out from the stationary platform in July 2011. The platform is situated on the Southern coast of Crimea (Katsively, Yalta), where sea depth is about 30 m. Continuous registration with thermistor chain as well as hour...

Internal standing waves (seiches) in the South Aral Sea are studied for the first time. The study, based on numerical simulations and field data and, focuses on two different campaigns: the first in autumn 2006, when the stratification was weak, and the second in autumn 2013, when it was strong. During this time, the sea surface level decreased 3.2...

Satellite radar (SAR) and visible band data from Envisat ASAR, ERS-2 SAR, Lansat-5,7,8 sensors were used to investigate internal waves (IWs) in the Black Sea. The three main areas of the Black Sea where surface manifestations of internal waves (SMIWs) were mostly observed are: the Danube Delta, Crimea Peninsula and the northeastern region near Novo...

In July, 2011, 10-day-long measurements from the MHI NANU platform in the Black Sea, provided instrumentally observing vertical oscillations of the thermocline (10 m and more) with a period close to the local inertial one (17.2 hrs). The observed oscillations cause a strong variability in the sound speed within the water bulk. That phenomenon is co...

This paper is focused on the hydrophysical state of the western basin of the Large Aral Sea in its present conditions of ecological crisis. The investigation is based on the direct observations carried out during a field survey in the Aral Sea in October of 2013. The analysis of the distribution of the temperature values across the western basin is...

Review of results of internal waves investigations carried out during summer season in the three regions of the Black Sea is presented. Observations were made in Gelendgik, Sukhum and Katsively regions having significant differences in shelf relief. The measurements were carried out by long-time moorings with vertical thermistor chains, as well as...

It is well known that the major factor of the generation of the intensive internal waves on the shelves of the oceans and open seas is barotropic tide. Despite of the Black sea is closed and free-tidal sea nevertheless there are exist quite intense internal wave field in here. The results of long-term observations of long- and short-period interna...