Ads
related to: devices used to detect radiation waves found in the ocean
Search results
Results from the WOW.Com Content Network
The radiation captured by the sensor is corrected for atmospheric disturbance and radiation noise to compute the brightness temperature of the ocean surface. With a correct estimation of the emissivity of sea water (~0.99) the grey body temperature of the ocean surface can be deduced, also referred to as the Sea Surface Temperature (SST).
An image of global sea surface temperatures acquired from the NOAA/ AVHRR satellite. The Advanced Very-High-Resolution Radiometer (AVHRR) instrument is a space-borne sensor that measures the reflectance of the Earth in five spectral bands that are relatively wide by today's standards.
Direct sensor measures directly some relevant parameter of the wave system (like surface elevation or water particle velocity). Indirect sensors observe the surface waves via the interaction with some other physical process as for example the radar cross section of the sea surface. Microwave radars may be used in two different modes;
Solids, liquids (e.g. the Earth's surface, ocean, sea ice, snow, vegetation) but also gases emit and absorb microwave radiation. Traditionally, the amount of radiation a microwave radiometer receives is expressed as the equivalent blackbody temperature also called brightness temperature. In the microwave range several atmospheric gases exhibit ...
Radar plotting with the use of an EBL and VRM, or the ARPA should be used to determine the information of movement and the risk of collision of other ships in vicinity. [4] Information given to the user includes bearing, distance, CPA (closest point of approach) and TCPA (time of closest point of approach). [4]
The following Radiological protection instruments can be used to detect and measure ionizing radiation: Ionization chambers; Gaseous ionization detectors; Geiger counters; Photodetectors; Scintillation counters; Semiconductor detectors
A drifter (not to be confused with a float) is an oceanographic device floating on the surface to investigate ocean currents by tracking location. They can also measure other parameters like sea surface temperature, salinity, barometric pressure, and wave height. [1] Modern drifters are typically tracked by satellite, [2] often GPS.
Weather Buoy / Data Buoy / Oceanographic Buoy operated by the Marine Data Service. The first known proposal for surface weather observations at sea occurred in connection with aviation in August 1927, when Grover Loening stated that "weather stations along the ocean coupled with the development of the seaplane to have an equally long range, would result in regular ocean flights within ten years."
Ads
related to: devices used to detect radiation waves found in the ocean