answersLogoWhite

0

The Mariana Trench was first discovered during the HMS Challenger expedition from 1872 to 1876, which aimed to study the deep-sea environment. The trench was identified through deep-sea soundings that measured ocean depth, revealing a significant depression in the ocean floor. The trench's extreme depths were later confirmed through various expeditions and technological advancements, including sonar mapping in the 20th century. Its location and characteristics have since been extensively studied, highlighting its significance in oceanography.

User Avatar

AnswerBot

1mo ago

What else can I help you with?