Sonar, ROVs, submersibles, remote sensing, ocean observing systems and major expeditions.
30 cards · basic cards · AI-written, checked twice. Edit anything.
- What does SONAR stand for?
Show answer
Sound Navigation and Ranging- Describe how active sonar works to detect objects.
Show answer
Sound waves are emitted and analyzed when they bounce back as echoes to determine location and properties of objects- What is passive sonar?
Show answer
A sonar technique that detects sounds produced by objects without transmitting any sound waves- What is an ROV?
Show answer
A Remotely Operated Vehicle, an unmanned submarine controlled from the surface through a tether cable- What is a major advantage of ROVs over manned submersibles?
Show answer
Human operators remain safe on the surface, and ROVs can remain submerged for extended periods without life support constraints- Name one famous ROV used in major oceanographic research.
Show answer
JASON II, Hercules, or Nautilus (any one acceptable)- What physically limits how deep an ROV can operate?
Show answer
The tether cable that connects it to the surface support vessel- What is a submersible?
Show answer
A small manned vessel designed to carry a crew underwater to conduct research or exploration at depth- Define a bathysphere.
Show answer
A spherical deep-diving manned submersible used primarily for direct observation and research at extreme ocean depths- What is the key difference between a submersible and a submarine?
Show answer
Submersibles are research vehicles with limited endurance and crew; submarines are military or commercial vessels designed for extended independent operations- What maximum depth can modern deep-diving submersibles reach?
Show answer
Typically 6,000 to 7,000 meters, with specialized vehicles like Nereus reaching approximately 10,971 meters- What is remote sensing in oceanography?
Show answer
The collection of information about the ocean from a distance using satellites, aircraft, or ship-mounted instruments without direct physical contact- Name three oceanographic parameters that can be measured by satellite.
Show answer
Sea surface temperature, ocean color (chlorophyll), wave height, sea ice extent, or sea surface salinity- How do oceanographic satellites measure phytoplankton concentration?
Show answer
By detecting the color and intensity of light reflected from the water, which varies with the abundance of chlorophyll in phytoplankton- What is an Argo float?
Show answer
An autonomous profiling float that drifts with ocean currents while measuring temperature and salinity at multiple depths throughout the water column
FlashKeepers