What is the similarity between Milwaukee Deep, Java Trench and Challenger Deep?

The Milwaukee Deep, Java Trench, and Challenger Deep represent the deepest known points of the Atlantic, Indian, and Pacific Oceans, respectively. The Milwaukee Deep is located within the Puerto Rico Trench and is the deepest point in the Atlantic Ocean at approximately 8,376 to 8,408 meters [1]. The Java Trench (also known as the Sunda Trench) contains the deepest point of the Indian Ocean, reaching depths of about 7,290 to 7,450 meters [1]. The Challenger Deep, situated at the southern end of the Mariana Trench in the western Pacific Ocean, is the deepest point on Earth, measured at approximately 10,925 to 11,034 meters [2]. These features are formed by tectonic plate subduction, where one oceanic plate dives beneath another, creating narrow, steep-sided depressions that constitute the hadal zone of the world's oceans [4].

Sources

1. [1] https://www.sciencedirect.com/science/article/pii/S001282521830429X
2. [2] Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 8: Convergent Boundary > The Mariana Trench or Marianas Trench > p. 115
3. [3] Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 31: Ocean Relief > Oceanic Deeps or Trenches > p. 482
4. [4] Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 31: Ocean Relief > Oceanic Deeps or Trenches > p. 481