The Hawaiian Trough, also known as the Hawaiian Deep, is a depression of the sea floor surrounding the Hawaiian Islands, where the massive weight of the island chain downwarps the oceanic lithosphere; surrounding the islands like a moat, it is roughly 5500 meters deep.However, in accordance with the principle of isostasy, the sinking of the lithosphere is balanced by a corresponding rise beyond it, known as the Hawaiian Arch.millimeters per year.[http://volcano.und.edu/vwdocs/hawaii_review/intro/intro.html" target="_blank" >^*

Sources:

• Hawaiian Submarine Volcanism

• Volcano World: Introduction to Hawaiian Volcanoes

External links

• Overview of Hawaiian Arch geology (PDF)

• New Evidence for Massive Landslides from the Hawaiian Islands (PDF)

See also

• Hawaiian Arch

• Submarine landslide