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The Gulf of Alaska (Tlingit: Yéil T'ooch’) [1] is an arm of the Pacific Ocean defined by the curve of the southern coast of Alaska, stretching from the Alaska Peninsula and Kodiak Island in the west to the Alexander Archipelago in the east, where Glacier Bay and the Inside Passage are found.
The expedition was broken into 6 segments, Seascape Alaska 1 - 6. Seascape Alaska 1 - 3 focused on deep water mapping and ROV exploration of the Aleutian Islands. From May 5 - 26, 2023 Okeanos Explorer mapped nearly 54,000 square kilometers of seafloor in the largely unexplored seafloors regions of the Gulf of Alaska and Aleutian Islands. The ...
The Aleutian island arc formed ~50-55 ma as a result of Kula Plate subduction under the North American Plate before the Pacific plate arrived. [3] There are three stratigraphic units of the Aleutian island arc: volcanic rocks from ~55-33 ma, marine sedimentary rocks from ~23-33 ma, and sedimentary and igneous rocks from ~5 ma-present. [3]
An abyssal plain is an underwater plain on the deep ocean floor, usually found at depths between 3,000 meters (9,800 ft) and 6,000 meters (20,000 ft).Lying generally between the foot of a continental rise and a mid-ocean ridge, abyssal plains are among the flattest, smoothest and least explored regions on Earth. [1]
The Nippon Foundation-GEBCO Seabed 2030 Project, which aims to motivate a number of collaborators to create a full map of the ocean floor, was launched in 2016. [5] There are four Seabed 2030 centres, which coordinate mapping activities in different regions, gather and compile the bathymetric information, and partner with existing mapping ...
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The Aleutian Trench (or Aleutian Trough) [1] is an oceanic trench along a convergent plate boundary which runs along the southern coastline of Alaska and the Aleutian islands. The trench extends for 3,400 kilometres (2,100 mi) from a triple junction in the west with the Ulakhan Fault and the northern end of the Kuril–Kamchatka Trench , to a ...
For some, it's bringing back the cross-Gulf sailings that connect Whittier — and Anchorage, the state's biggest city — to Southeast Alaska and the Lower 48; many long for the return of service ...