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around 100–200 m deep. The shelf break is at around 400–500 m. The western side of Prydz Bay features a broad trough crossing from the inner shelf to the shelf edge, Prydz
Channel. It is around 100 km wide and is 500 m deep at the shelf break. It is a typical example of a cross-shelf glacial trough that occupy 40.2% of the area of the Antarctic continental shelf and that are formed by fast-flowing ice streams.
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debris at the grounding line at the continental shelf edge. Ocean
Drilling Program Site 1167 indicates that thick debris flow intervals are separated by thin mudstone horizons deposited when the ice had retreated from the shelf edge. The bulk of the trough mouth fan was deposited prior to ~780,000 years ago with as few as three debris flow intervals deposited since then.
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The Amery Ice Shelf extends about 550 km north of the
Lambert Glacier grounding zone and occupies a valley between 80 and 200 km wide. Depths to the bed beneath the Amery Ice Shelf are poorly known in detail but it is clearly over-deepened, reaching around -2500 m MSL close to the grounding
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O’Brien, P.E., Cooper, A.K., Florindo, F., Handwerger, D.A., Lavelle, M., Passchier, S., Pospichal, J.J., Quilty, P.G., Richter, C., Theissen, K.M., Whitehead, J.M., 2004. Prydz
Channel Fan and the history of extreme ice advances in Prydz Bay. , in: Cooper, A.K., O’Brien, P.E., Richter, C. (Eds.),
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During the late
Neogene, the Lambert Glacier–Amery Ice Shelf drainage system flowed across Prydz Bay in an ice stream that reached the shelf edge and built a trough mouth fan on the upper continental slope. The fan consists mostly of debris flow deposits derived from the melting out of subglacial
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Seaward of the Amery Ice Shelf, Prydz Bay shows bathymetry typical of glaciated margins with deeper water near the coast with a broad topographic basin, the Amery
Depression that is around -700 m MSL along the front of the Amery Ice Shelf. The Amery Depression shoals gently to outer shelf banks
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O’Brien, P.E., Goodwin, I., Forseberg, C-F., Cooper, A.K. & Whitehead, J. 2007. Late
Neogene Ice Drainage Changes in Prydz Bay, East Antarctica and the interaction of Antarctic ice sheet evolution and climate. Palaeogeography, Palaeoclimatology, Palaeoecology, 245,
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Damm, V. 2007. A subglacial topographic model of the southern drainage area of the
Lambert Glacier/Amery Ice Shelf system – results of an airborne ice thickness survey south of the Prince Charles Mountains. Terra Antarctica, 14,
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on the south-west side of Prydz Bay. Other major glaciers drain into the southern end of the Amery Ice Shelf at 73° S where the marine part of the system starts at the modern grounding zone.
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zone. The Amery Ice Shelf occupies a very large U-shaped valley with exposed nunataks along the flanks reaching 1500 m in elevation and total relief as high as 3000 m.
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Fricker, H. A., Popov, S., Allison, I. & Young, N. 2001. Distribution of marine ice beneath the Amery Ice Shelf. Geophysical
Research Letters, 28, 2241-2244.
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140:. The Bay is at the downstream end of a giant glacial drainage system that originates in the East Antarctic interior. The
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Harris, P.T., MacMillan-Lawler, M., Rupp, J., Baker, E.K., 2014. Geomorphology of the oceans. Marine
Geology 352, 4-24.
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183:(BANZARE). It was explored in February 1935 by Norwegian whaler Captain Klarius Mikkelsen in the ship
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Proceedings of the Ocean Drilling Program, Scientific Results. Ocean Drilling Program, pp. 1-32.
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of 1936–37. Named for Olaf Prydz, general manager of the Hvalfangernes Assuranceforening in
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Portions of the bay were sighted in January and February 1931 by
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British Australian New Zealand Antarctic Research Expedition
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239:are located on Prydz Bay at the
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189:Lars Christensen Expedition
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59:Location of Prydz Bay in
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358:location article is a
312:public domain material
134:Lars Christensen Coast
241:Larsemann Hills Oasis
223:Law-Racoviță-Negoiță
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414:Bays of Antarctica
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104:69.000°S 75.000°E
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193:Sandefjord
130:Antarctica
124:is a deep
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185:Thorshavn
174:Norwegian
148:into the
126:embayment
122:Prydz Bay
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288:390-410.
220:Romanian
216:Progress
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227:Chinese
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177:whalers
168:History
269:85-94.
234:Indian
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197:Norway
95:75°0′E
92:69°0′S
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