What does a BathyThermograph measure?
What does a BathyThermograph measure?
An eXpendable BathyThermograph (XBT) is a probe that is dropped from a ship and measures the temperature as it falls through the water. A resistance in the head of the probe and a very thin twin-wire, connecting the probe to the equipment on the ship, compose the electronic circuit for measuring the water temperature.
What is XBT in oceanography?
An XBT is a small probe that is dropped over the side of a ship. As it falls through the water, it measures temperature. Small wires transmit the temperature data back to the ship where it is recorded for further analysis.
What is a CTD used for?
A CTD or sonde is an oceanography instrument used to measure the electrical conductivity, temperature, and pressure of seawater (the D stands for “depth,” which is closely related to pressure). Conductivity is used to determine salinity.
How much does a CTD cost?
Price
| Part# | Product Description | Price |
|---|---|---|
| DI282 | CTD-Diver water level, conductivity & temperature logger, 50m range | $1,795.00 |
| DI283 | CTD-Diver water level, conductivity & temperature logger, 100m range | $1,795.00 |
| DI284 | CTD-Diver water level, conductivity & temperature logger, 200m range | $1,795.00 |
How does a CTD measure salinity?
By measuring the conductivity of seawater, the salinity can be derived from the temperature and pressure of the same water. The depth is then derived from the pressure measurement by calculating the density of water from the temperature and the salinity.
What is CTD data used for?
A CTD — an acronym for Conductivity, Temperature, and Depth — is the primary tool for determining essential physical properties of sea water.
What is CTD used for?
Why is it important to track CTD information for the oceans?
Why Is It Important? CTDs are common equipment in oceanography because they measure chemical and physical properties of the water column, which serve as a foundation for understanding the marine environment.
What is CTD in Marine?
What is the purpose of a CTD?
What types of data does the CTD collect?
CTD stands for conductivity, temperature, and depth, and refers to a package of electronic instruments that measure these properties. Conductivity is a measure of how well a solution conducts electricity and is directly related to salinity, which is the concentration of salt and other inorganic compounds in seawater.
What is a CTD cast?
A cast is one down-and-up cycle of the CTD. Each cast consists of a downcast and upcast. Because of the way the CTD and other equipment are configured on the package, the data from the downcast is usually more accurate.