2006-12-26 05:35:42 · 4 answers · asked by chica_boricua_78 1 in Science & Mathematics ➔ Geography
The Benthic Mapping Project utilizes a battery of techniques to chart the landscape under the river (known as the benthos). Each method provides information about different features of this underwater habitat. Combining the data enables us to create a topographical picture of the river floor, know the composition and thickness of the sediment layer beneath, and also tells us about its inhabitants and their health.
Beaming sound waves underwater and measuring the way they bounce back off the river floor is the first step in benthic mapping (called acoustic profiling). The time it takes for an echo to return indicates the depth. This echo needs to be measured at a huge number places in the river to collect enough information to construct a benthic map.
2006-12-26 05:41:55 · answer #1 · answered by yashi m 3 · 0⤊ 0⤋
It's a map of the lower region of a body of water including the bottom, which is the lowest level of all aquatic biomes..
The benthic zone is one of the two basic subdivisions of the marine biome; includes the sea floor and bottom-dwelling organisms.
Bacteria, worms, angler fish and echinoderms live there. Some bacteria use chemicals from thermal vents to make food.
2006-12-26 05:39:19 · answer #2 · answered by Исаак Озимов 3 · 0⤊ 0⤋
A map of the floor of a river/sea/ocean/lake.
2006-12-26 05:39:56 · answer #3 · answered by DokterScience 2 · 0⤊ 0⤋
I also found a bit about it spelled benthonic, but the other answers are better.
2006-12-26 05:49:12 · answer #4 · answered by Casperia 5 · 0⤊ 0⤋