Before revision: 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 deep.
After revision: The Hawaiian Trough, otherwise known as the Hawaiian Deep, is a depression of the seafloormoat-like 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 deep.