Which is deepest known point on ocean floors and how it has been measured.?

Answer 1

They are all right...

And I've seen it. Well, from as far as I can go with a snorkle on...

He he...

Answer 2

The deepest known point on Earth is at the bottom of the Mariana Trench, a depression in the floor of the western Pacific Ocean, just east of the Mariana Islands.

The Mariana Trench is 1,554 miles long and averages 44 miles wide. Within it, about 210 miles southwest of Guam, lies the deepest known point on Earth. Named the “Challenger Deep” for the British survey ship Challenger II that located it in 1951, this underwater gorge plunges to a depth of nearly 7 miles! It is deeper than Mt. Everest is tall.

In 1960, Jacques Piccard and Navy Lt. Donald Walsh made history when they descended in the U.S. Navy bathyscaphe Trieste to the bottom of the Mariana Trench. Here, the pressure from the weight of the vast ocean above is over 8 tons per square inch, or the equivalent of an average-sized woman holding 48 jumbo jets!

In 1996, the remotely operated vehicle Kaiko, operated by the Japan Marine Science and Technology Center, visited the Challenger Deep and recorded several marine organisms, including shrimp-like amphipods, a scale worm, a sea cucumber, and various microbes.

Answer 3

The Mariana Trench is located in the Pacific Ocean, just east of the 14 Mariana Islands (11"21' North latitude and 142" 12' East longitude ) near Japan. As you probably already know, it is the deepest part of the earth's oceans, and the deepest location of the earth itself. It was created by ocean-to-ocean subduction, a phenomena in which a plate topped by oceanic crust is subducted beneath another plate topped by oceanic crust.

The deepest part of the Mariana Trench is the Challenger Deep, so named after the exploratory vessel HMS Challenger II; a fishing boat converted into a sea lab by Swiss scientist Jacques Piccard.

The Mariana Trench is 6033.5 fathoms deep (11,033 meters (36,201 feet)). In order to better illustrate the actual depth of the Mariana Trench, consider the following; if Mount Everest, which is the tallest point on earth at 8,850 meters (29,035 feet), were set in the Mariana Trench, there would still be 2,183 meters (7,166 feet) of water left above it.

The Mariana Trench was first pinpointed and surveyed in 1951 by the British Survey ship Challenger II., which gave its name for the trench's deepest point, "The Challenger Deep".

Answer 4

The Mariana Trench in the Pacific Ocean, the deepest point in the trench is called Challenger Deep.

Jaques Costeau went to the bottom in a specially designed 2 man submarine.

It has not been done since, as it is very expensive to design something to go so deep, and there is little scientific gains to be made.

The Mariana trench goes down 7 miles MORE than Mount Everest gous up!!

When Costeau was down there, it was assumed that there would be no life, as nothing could possibly live under such pressures, but Giant Squid & Sperm whales were seen, and a species of shark that was thought to be extinct for thousands of years (the Goblin Shark)

Answer 5

This is known as Challenger Deep and is at the bottom of the Marianas Trench near Japan.
The trench is deeper than everest is high. It was visited by a vessel called Trieste back in 1960.

Answer 6

the Mariana trench is the deepest and they measured it using echo location of some kind you send down a pulse and when it hits a solid object such as rock it bounces back scientists measure how far down it goes before it bounces back.

Answer 7

deepest oceans and seas)

#1 Pacific Ocean (35,837 ft) (10,924 meters)
#2 Atlantic Ocean (30,246 ft) (9,219 meters)
#3 Indian Ocean (24,460 ft) (7,455 meters)
#4 Caribbean Sea (22,788 ft) (6,946 meters)
#5 Arctic Ocean (18,456 ft) (5,625 meters)
#6 South China Sea (16,456 ft) (5,016 meters)
#7 Bering Sea (15,659 ft) (4,773 meters)
#8 Mediterranean Sea (15,197 ft) (4,632 meters)
#9 Gulf of Mexico (12,425 ft) (3,787 meters)
#10 Japan Sea (12,276 ft) (3,742 meters)

Answer 8

marian trench