Ekaterina Petrovna Ponomarenko

Ekaterina Petrovna Ponomarenko
Institute of Oceanology. PP Shirshov Russian Academy of Sciences · Atlantic Branch

PhD Student

About

31
Publications
2,758
Reads
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59
Citations
Additional affiliations
September 2016 - present
Immanuel Kant Baltic Federal University
Position
  • PhD Student
November 2015 - May 2016
September 2015 - February 2016
Kiel University
Position
  • Master's Student

Publications

Publications (31)
Article
Full-text available
We present the reconstruction of palaeoenvironmental conditions in the Gdansk, Bornholm, and Arkona Basins of the Baltic Sea over the last millennium. A multiproxy study (including geochemical, XRF, grain size, AMS, and micropalaeontological analyses) of five short sediment cores was performed. The relative age of the sediments was determined based...
Article
The Charlie-Gibbs Fracture Zone (CGFZ) is the main transform system in the North Atlantic Ocean. It serves as a primary deep-water gateway for the Iceland-Scotland Overflow Water (ISOW) current. Using high-resolution seismo-acoustic profiling, three types of contourite drift were identified in the valleys of the inactive fractures and active transf...
Article
Full-text available
Problems of the paleogeographical evolution and changes in sedimentation environment within the Indigirka River paleovalley (the East Siberian Sea) are discussed. Based on the results of geophysical and geological research and a high-resolution study of sediment cores (grain size analysis, geochemistry, macro- and micropaleontology, pollen analysis...
Article
The paper deals with the results of geological and geophysical research of shallow-water areas of the East Siberian Sea, started in 2018 in the frame of State Geological Mapping project (Geological Map of 1 : 1 000 000 scale) and continued in 2022 under support of the Russian Science Foundation project. The seismostratigraphic scheme of the Quatern...
Article
Brief results of oceanological studies of the southeastern part of the Baltic Sea and the Gulf of Finland during 54th cruise of the R/V Akademik Sergei Vavilov (2022) are presented. Hydrology, hydro- and geochemistry, hydrobiology, geoecology, geology and geophysics investigations were carried out. New data on the state and dynamics of the natural...
Article
Full-text available
The paper deals with results of geological and geophysical study of the East Siberian Sea coastal areas are reported. Research activities started in 2018 in the frame of the State Geological Mapping Project (GK-1000/3) and continued in 2022 under support of the Russian Science Foundation. A seismo-stratigraphic scheme of the Quaternary sediment seq...
Article
Shelf zone of the East-Siberian Sea is one of the least studied marine areas of the Russian Arctic. One of the important unsolved problems is the existence of a ice sheet in the area of the New Siberian Islands, and the debate about the age and genesis of underwater ridges (bars). Based on geological and geophysical field work condicted by VSEGEI i...
Article
Sediment archives are the key source of information about long-term environmental dynamics under changing climate conditions, which is crucial for reliable forecasts. The presented work aims at reconstructing the Baltic Sea palaeoenvironment during the Littorina stage with a particular interest in variations in the saline water inflows. Complex ana...
Article
New data are presented on the geological sequence, composition, and genesis of Late Pleistocene–Holocene deposits in the southern part of the East Siberian Sea (Long Strait to Chaun Bay). Basic materials were collected during a marine geological expedition by the A.P. Karpinsky Russian Geological Research Institute (VSEGEI) carried out in 2018 for...
Article
Full-text available
This study investigates crustal accretion processes along the northern stretch of the Mid-Atlantic Ridge (MAR) between the Charlie Gibbs (52°-53°N) and Bight (57°N) transforms. These long-lived transform systems, active for more than 40 Ma, bound a ~ 550 km-long MAR segment influenced to the South by the Azores and to the North by the Iceland man...
Article
Full-text available
Strong acceleration of abyssal flows in narrow deep‐water channels and fracture zones is a key feature of bottom circulation in the Atlantic Ocean. In the Equatorial Atlantic, these bottom currents transport Antarctic Bottom Water (AABW) over the Mid‐Atlantic Ridge from west to east. The main pathway for Antarctic waters in this region is the Roman...
Article
Reconstruction of the Atlantic Meridional Overturning Circulation (AMOC) based on long-term records spanning multiple glacial-interglacial transitions is essential for understanding the interplay between ocean dynamics and global climate change. However, despite valuable previous studies, many uncertainties remain, especially regarding the distribu...
Article
Full-text available
Five seismostratigraphic strata (SSS), which can be correlated with different stages of the evolutionof the area during the Pliocene – Quaternary, were identified, and their distribution in the mappedarea was traced based on a comprehensive analysis of geological and geophysical data obtained duringthe expedition-2018, carried out by VSEGEI experts...
Article
Full-text available
During cruise 43 of the R/V Akademik Nikolaj Strakhov (September 21–October 9, 2019), new data were obtained on the bottom relief, sedimentation, and hydrological regime of the Discovery Gap (eastern North Atlantic). It was shown that the upper limit of the Antarctic Bottom Water in the study area follows the 2.05°C isotherm and 34.91 PSU isohaline...
Article
Full-text available
This paper presents the results of high‐resolution sedimentological analyses of sediment cores from the eastern Gulf of Finland (Baltic Sea). Sampling sites in the periphery of sedimentary basins were selected on the basis of acoustic profiling analyses. The research allowed tracing of the transition from the freshwater Ancylus Lake to the Littorin...
Article
Full-text available
The Baltic Sea is characterized by a restricted exchange of deep waters due to permanent stratification of the water column. The aim of the present study is to investigate the distribution of benthic foraminifera in the southeastern part of the Baltic Sea in relation to environmental parameters. The distribution of benthic foraminifera was analyzed...
Article
Full-text available
The 44th cruise of the RV Akademik Boris Petrov to the Baltic Sea and the Skagerrak Strait was carried out from 5 to 30 October, 2018. The studies included the study of the structure of water mass, near bottom currents, bottom sediments and biological communities.
Article
The sediment drift north of the Kane Gap has been investigated by means of the seismoacoustic profiling. The surface area of the drift is about 500 km2 and maximal thickness is 70 m. The contourite drift was formed under the control of the Antarctic Bottom Water (AABW) flow in the Kane Gap. It is suggested naming this contourite fan as the "Kane Dr...
Article
Full-text available
The hydrological regime of Baltic Sea bottom water is strongly influenced by irregular inflows of high-saline, oxygen-rich North Sea water through the narrow Danish Straits. The aim of this work was to study the interrelation between the distribution of benthic foraminifera in the South-Eastern Baltic Sea and hydrology of the bottom water. Benthic...
Thesis
All environmental processes, as changes in sea ice cover and terrestrial glaciations, surface oceanic circulation and vertical water column structure, surface-water productivity, atmospheric circulation, precipitation and river discharge has a reflection in marine sedimentary records. Hence detailed study of sediment cores can provide an important...
Article
Full-text available
Water level observations in the Don River delta have been carried out at Research Station of the Southern Scientific Center RAS (settlement of Kagal’nik) since 2007 to study hydrological regime. The measurements are by standard hydrological equipment (depth-gauge, fl oat level indicator) and specially developed hardware-software system of data coll...
Article
A rather simple method to estimate content of organic matter of dry atmospheric deposition is discussed. The method is suitable for territories with insuffi cient humidifi cation and arid climate. The organic carbon content of aeolian dry deposition was measured during a summer season on an experimental platform in Rostov- on-Don and resulted in an...

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