The Commander Basin (alternately Komandorsky Basin) is located between the Shirshov Ridge and the Kamchatka Peninsula. Its southern boundary is the Aleutian arc (see figure) and occupies the western part of the Bering Sea. The Kamchatka Strait provides a deep water access to the basin from the southwest.
The basins sedimentary cover is less than 2 km thick. In the southwestern portion of the basin near the Ulakahn Fault, linear magnetic anomalies associated with the Early Miocene have been identified. The magnetic anomalies support a sequential opening of the Commander Basin resulting from stresses on the interface between the Eurasian and Pacific plates. The structures of the Bering Sea floor at the Commander Basin were created 17 to 21 Million years before the present.[1]
The Commander Basin floor is a horizontal plain 3800–3900 m deep. It is covered with 2000–6000 m of sediment overlying an oceanic crust which is 12–14 km thick.[2] Active spreading in the Commander Basin occurred between 40 and 10 Myr ago, with subduction of the basin floor along the Ulakhan fault underneath the Kamchatka peninsula. There are four major fracture zones in the basin and magnetic lineations have been detected in the basin. Except in the southern end of the basin, the spreading center has been subducted.[3]
The water in the basin circulates in a cyclonic gyre, with the western Kamchatka Current flowing southward along the Kamchatka Peninsula. The northward leg of the gyre is outside of the Commander Basin, and is carried by the Bering Slope Current, which flows along the edge of the continental shelf at the eastern edge of the Aleutian Basin. To the south, the Commander Basin connects to the North Pacific through the 4.4 km wide, 4,420 meter deep Kamchatka Strait and the 2.0 km wide, 2,000 meter deep Near Strait.[4]
^E. V. Verzhbitsky, M. V. Kononov and V. D. Kotelkin; Plate Tectonics of the Northern Part of the Pacific Ocean; Oceanology, 2007, Vol. 47, No. 5, pp. 705–717; doi:10.1134/S000143700705013X
^A. O. Mazarovich; Marginal Seas—Terminological Crisis; Geotectonics; 2011; Vol. 45; No. 4, pp. 317–333; doi:10.1134/S0016852111040030
^S.R. Clark, R.D. Müller; Convection models in the Kamchatka region using imposed plate motion and thermal histories; Journal of Geodynamics; Vol. 46 (2008) pp. 1–9
^M.S. Cook, , L.D. Keigwin, C.A. Sancetta; The deglacial history of surface and intermediate water of the Bering Sea; Deep-Sea Research Part II; Volume 52 (2005) pp. 2163–2173
The CommanderBasin (alternately Komandorsky Basin) is located between the Shirshov Ridge and the Kamchatka Peninsula. Its southern boundary is the Aleutian...
is separated into the CommanderBasin and Bowers basins by the submarine Shirshov Ridge and Bowers Ridge. The CommanderBasin occupies the western part...
Union (1938) Geography: Shirshov Ridge, on the eastern border of the CommanderBasin below the Kamchatka Peninsula Mount Shirshov, a small mountain 3 miles...
The Shirshov Ridge is located on the eastern border of the CommanderBasin below the Kamchatka Peninsula. It extends directly southward for a distance...
deepest and flattest sector of the deep basin. The use of "Sigsbee" for the feature originates from Commander Charles Dwight Sigsbee's Gulf of Mexico...
The Gulf of Mexico (Spanish: Golfo de México) is an ocean basin and a marginal sea of the Atlantic Ocean, mostly surrounded by the North American continent...
the Colorado River Basin is divided into the Upper Basin (the drainage area above Lees Ferry), and the Lower Basin. The Upper Basin covers only 45 percent...
lava plain within the Imbrium Basin on the Moon and is one of the larger craters in the Solar System. The Imbrium Basin formed from the collision of a...
REMNANTS IN LAKE CHAD BASIN". DefenceTimesNG. Retrieved 10 May 2024. admin (9 April 2023). "Meet Maj Gen Ibrahim Sallau Ali, Force Commander Multinational Joint...
The Brandwater Basin is the drainage basin of the Brandwater River (Afrikaans: Brandwaterrivier), a tributary of the Grootspruit River in the south-east...
Hughes Basin (80°19′00″S 156°18′00″E / 80.3166667°S 156.3°E / -80.3166667; 156.3 (Hughes Basin)) is a large basinlike névé which is bounded except...
These gates control the water level in the basin so that it is not affected by the tide. Beyond the basin is the larger inner dock called the Bassin de...
The Hungarian conquest of the Carpathian Basin, also known as the Hungarian conquest or the Hungarian land-taking (Hungarian: honfoglalás, lit. 'taking/conquest...
proceed from the repairing basin, to the rigging basin, to the fitting-out basin, and exit from there into a new tidal basin, ready to take on fuel alongside...
Francis Basin LdH CdeG MBE (1903–1975), code named Olive, was an agent of the United Kingdom's clandestine Special Operations Executive in France during...
kilometers) long, and its largest tributary is the Snake River. Its drainage basin is roughly the size of France and extends into seven states of the United...
(1998). Ethnic Geography of the Hungarian Minorities in the Carpathian Basin. Geographical Research Institute, Research Centre and Earth Sciences. p...
taken refuge in Hembrillo Basin, located on the western slopes of the San Andres Mountains. To attack the Apache, the army commander Colonel Edward Hatch divided...
over 14,000 feet (4,300 m) in Colorado. Farther west are the rocky Great Basin and Chihuahua, Sonoran, and Mojave deserts. In the northwest corner of Arizona...
deep, relatively flat basin province (10%) in the western center of the lake. The deepest part of the lake is the Tatvan basin, which is almost completely...
minister. Head of State: The ceremonial head of the state and civilian commander-in-chief of the Pakistan Armed Forces is the President, elected by an...
interests of its population. Functioning under the president of Kosovo as the commander-in-chief, the security force adheres to the principle of non-discrimination...
The situation was aggravated in early 1935 when the Territory of the Saar Basin was legally reunited with Germany, and Hitler repudiated the Treaty of Versailles...
Paleolithic era, with the earliest dynasties emerging in the Yellow River basin before the late second millennium BCE. The eighth to third centuries BCE...