it was called the meteor
That technique is called sonar.
Survey of Pakistan made the first map of pakistan.
they probably would use a sonar which is a device that bounces sound waves off under water objects and then records the echoes of these sound waves. =]
Eratosthenes. I think another ancient Greek, Anaximander, is the answer. Obviously, we can't be sure who was really the first map maker. It's known for example that earlier maps were made by the Babylonians and Egyptians, but we don't know the the individuals who made those maps.
yes it was your butt
the Challenger
A sonar map is a visual representation of the data collected by sonar technology. It shows underwater structures, terrain, and objects by detecting sound waves that bounce off underwater surfaces and return to the sensor. Sonar maps are commonly used for creating underwater maps, monitoring marine environments, and navigation.
sonar,is used to map mid-ocean ridges:]
We can use sonar to map the lake's floor.
Scientist use Sonar to map the ocean floor. Scientist use Sonar to map the ocean floor.
Sonar.
Sonar is used to map the seafloor.
sonar
Side scan sonar uses sonar to map the the ground below by emitting continuous sonar pulses while moving. The sound continuously reflects back to the system's receiver, which creates an image based on the energy of the signal received, where darker points in the image match things protruding from the ground and lighter spots indicate where there is nothing. It does not measure the depth. Side scan sonar is usually towed behind the vessel using it. Multibeam sonar is similar to side scan sonar, except that it is attached to the vessel (rather than being towed) and measures the time difference between sound emission and reception, rather than the energy of the incoming sound waves. Thus, it measures depth instead of making a picture.
Sonar.
Sonar.
sonar