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Related Experiment Video

Updated: Nov 1, 2025

Voltage and Calcium Dual Channel Optical Mapping of Cultured HL-1 Atrial Myocyte Monolayer
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CTD data over a repeated section in the Vema Channel.

Eugene G Morozov1, Dmitry I Frey1

  • 1Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia.

Data in Brief
|June 25, 2021
PubMed
Summary

Scientists collected repeated CTD measurements in the Vema Channel from 1991 to present. The data track Antarctic Bottom Water movement through a narrow seafloor passage. Researchers used the SBE-19 profiler to measure conductivity, temperature, and depth at fixed locations. The dataset provides a standardized record for studying deep-sea water circulation patterns. Russian scientists joined the effort in 2002 to maintain consistent measurements. The data are publicly available for further analysis.

Keywords:
Abyssal currentsAbyssal waterAntarctic bottom waterCTDSouth AtlanticVema ChannelVema Channel hydrographyAntarctic Bottom Water movementCTD data collection methodsSouth Atlantic oceanography

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Area of Science:

  • Oceanographic data collection methods
  • Marine geophysics in the South Atlantic
  • Antarctic Bottom Water transport studies

Background:

Oceanographers have long sought to map deep-sea water movement patterns. The Vema Channel serves as a critical pathway for Antarctic Bottom Water. Prior studies established baseline measurements in 1991. Researchers needed consistent data to track changes over time. No prior work had resolved long-term variability in this region. Scientists required repeated measurements to capture seasonal and interannual shifts. The Rio Grande Rise topography influences water flow dynamics. This gap motivated the creation of a standardized monitoring section.

Purpose Of The Study:

Researchers aimed to compile a CTD dataset from repeated measurements in the Vema Channel. The goal was to document Antarctic Bottom Water movement patterns. Scientists needed a consistent dataset for comparative analysis. The Vema Channel's narrow geometry makes it ideal for monitoring. No prior work had established a standard section for this region. The study focused on maintaining measurement consistency over time. Data collection began in 1991 with German scientists. Russian researchers joined in 2002 to continue the effort.

Main Methods:

Scientists deployed the Sea-Bird Electronics SBE-19 profiler for measurements. The device recorded conductivity, temperature, and depth at each station. Researchers established a standard section along 31°12' S latitude. The longitudinal range covered 39°18.0 W to 39°30.0 W. Data collection occurred at fixed intervals across the channel. The methodology ensured consistent spatial coverage. Measurements were taken at multiple depths for each station. The dataset was compiled in tabular format for easy analysis.

Main Results:

The dataset includes CTD measurements from repeated sections in the Vema Channel. Data collection spanned from 1991 to recent years. Russian scientists contributed measurements after 2002. The SBE-19 profiler provided high-resolution depth profiles. Conductivity and temperature data were recorded at each station. The dataset captures long-term variability patterns. Spatial coverage remained consistent across all measurements. The data are publicly accessible through a DOI link.

Conclusions:

The dataset provides a standardized record of Vema Channel hydrography. Researchers can use these data to study Antarctic Bottom Water dynamics. The repeated measurements enable temporal trend analysis. The SBE-19 profiler ensured consistent data quality. The standard section approach allows for comparative studies. Data availability supports future research in the region. The dataset complements prior work in the South Atlantic. This resource may enhance understanding of deep-sea water circulation.

The dataset provides repeated CTD measurements from 1991 to present in the Vema Channel.

The profiler ensures consistent conductivity, temperature, and depth measurements across all stations.

The channel serves as a narrow conduit for Antarctic Bottom Water across the Rio Grande Rise.

Standard sections allow researchers to track changes in water properties over time consistently.

The dataset is publicly available at http://dx.doi.org/10.17632/hh4hhn6ny8.1.

The dataset includes tabular CTD measurements from repeated sections in the Vema Channel.