Sjögren Glacier () is a glacier long in the south part of

Trinity Peninsula Trinity Peninsula is the northernmost part of the Antarctic Peninsula. It extends northeastward for about 130 km (80 mi) to Cape Dubouzet from an imaginary line connecting Cape Kater on the north-west coast and Cape Longing on the sou ...

, Antarctica. It flows southeast from

Detroit Plateau The Detroit Plateau () is a major interior plateau of Graham Land on the Antarctic Peninsula, with heights between . Its northeast limit is marked by the south wall of Russell West Glacier, from which it extends some in a general southwest direc ...

to the south side of Mount Wild, where it enters

Prince Gustav Channel The Prince Gustav Channel () is a strait about long and from wide, separating James Ross Island and Vega Island from the Trinity Peninsula, Antarctica. Location Prince Gustav Channel is in Graham Land on the southeast coast of the Trinity Pen ...

Location

The Sjögren Glacier is in

Graham Land Graham Land is the portion of the Antarctic Peninsula that lies north of a line joining Cape Jeremy and Cape Agassiz. This description of Graham Land is consistent with the 1964 agreement between the British Antarctic Place-names Committee ...

towards the southwest of the

, which forms the tip of the

Antarctic Peninsula The Antarctic Peninsula, known as O'Higgins Land in Chile and Tierra de San Martin in Argentina, and originally as Graham Land in the United Kingdom and the Palmer Peninsula in the United States, is the northernmost part of mainland Antarctica. ...

. It flows southeast from the

to enter

opposite

Röhss Bay Röhss Bay () is a bay wide, between Cape Broms and Cape Obelisk on the southwest side of James Ross Island, Antarctica. Location Röhss Bay indents the west shore of James Ross Island, which lies to the southwest of Trinity Peninsula, at the t ...

James Ross Island James Ross Island () is a large island off the southeast side and near the northeastern extremity of the Antarctic Peninsula, from which it is separated by Prince Gustav Channel. Rising to , it is irregularly shaped and extends in a north–so ...

. It is north of Mount Tucker and Longing Peninsula, and northeast of

Larsen Inlet Larsen Inlet () is an inlet, formerly ice-filled, long in a north–south direction and wide, between Cape Longing and Cape Sobral along the east coast of Graham Land, Antarctica. Location Larsen inlet is at the east end of the Nordenskjö ...

. Mount Hornsby looks over its western side.
Copernix satellite image

Glaciology

The Prince Gustaf Channel was filled by an ice shelf until the late 1980s. Its main sources were the Sjögren Glacier and the Röhss Glacier, which flows from

. The ice shelf began to gradually retreat in the late 1980s, and collapsed in January 1995. In the period before the collapse the ice shelf contained many rifts, crevasses and melt ponds. After the collapse the Röhss Glacier rapidly retreated by about between January 2001 and March 2009, and lost more than 70% of its area. Between 1996 and 2014 the glaciers flowing into Sjögren Inlet retreated by about . The rate of flow accelerated until 2007 in the Sjögren Glacier, and until 2004 in the Boydell Glacier. As of 2014 the rate of flow was still about twice the rate in 1996.

Discovery and name

Sjögren Glacier was discovered in 1903 by the

Swedish Antarctic Expedition The Swedish Antarctic Expedition of 1901–1903 was a scientific expedition led by Otto Nordenskjöld and Carl Anton Larsen. It was the first Swedish endeavour to Antarctica in the Heroic Age of Antarctic Exploration. Background Otto Nordensk ...

(SwedAE) under

Otto Nordenskjöld Nils Otto Gustaf Nordenskjöld (6 December 1869 – 2 June 1928) was a Swedish geologist, geographer, and polar explorer. Early life Nordenskjöld was born in Hässleby in Småland in eastern Sweden, in a family that included his maternal unc ...

. He named it Hj. Sjögren Fiord after a patron of the expedition. The true nature of the feature was determined by the

Falkland Islands Dependencies Survey The Falkland Islands and Dependencies Aerial Survey Expedition (FIDASE) was an aerial survey of the Falkland Islands Dependencies The Falkland Islands Dependencies was the constitutional arrangement from 1843 until 1985 for administering the v ...

(FIDS) in 1945.

Western features

Seydol Crag

A narrow, rocky ridge extending and rising to high in the southeast foothills of Detroit Plateau. Situated west-southwest of Lobosh Peak, northwest of Mureno Peak and north-northeast of Mount Hornsby. Surmounting the upper course of Sjögren Glacier to the west and south. Named after the settlement of Seydol in Northeastern Bulgaria.

Survakari Nunatak

A rocky hill rising to high in the southeast foothills of Detroit Plateau. Situated in upper Sjögren Glacier, south-southeast of Seydol Crag and northeast of Mount Hornsby. Named after the Bulgarian New Year's folkloric ritual of ''Survakari''

Mount Hornsby

. A prominent snow-capped mountain on the south side of the middle reaches of Sjögren Glacier. Mapped from surveys by FIDS (1960-61). Named by UK-APC after

Richard Hornsby Richard Hornsby ( Elsham in Lincolnshire 4 June 1790 – 6 January 1864) was an inventor and founder of a major agricultural machinery firm that developed steam engines. His firm also developed early diesels and caterpillar tracks. He came from ...

and Sons of Grantham, who designed and constructed several highly successful chain-track vehicles for the British War Office, the first "caterpillar tractors,, 1904-10.

Draka Nunatak

. A lens-shaped rocky ridge extending and wide, with twin heights rising to on the southwest coast of Sjögren Inlet. Situated south-southwest of Vetrovala Peak and southeast of Mount Hornsby. Named after the settlements of Draka and Drakata in Southeastern and Southwestern Bulgaria respectively.

Eastern features

Boydell Glacier

. A glacier about long, flowing southeast from the Detroit Plateau, Graham Land, and merging on the south side with Sjögren Glacier. Mapped bythe

(FIDS) from surveys (1960-61). Named by the

UK Antarctic Place-Names Committee The UK Antarctic Place-Names Committee (or UK-APC) is a United Kingdom government committee, part of the Foreign and Commonwealth Office, responsible for recommending names of geographical locations within the British Antarctic Territory (BAT) an ...

(UK-APC) for

James Boydell James Boydell (died January 1860) was a British inventor of steam traction engines. His most significant invention was the first practical track-laying vehicle, for which he received British patents in August 1846 and February 1854. Description ...

, English inventor of a steam traction engine, the first practical track-laying vehicle (British Patents of 1846 and 1854).

Lobosh Peak

An ice-covered peak rising to in the southeast foothills of Detroit Plateau. Situated east of the upper course of Boydell Glacier, west by south of

Petkov Nunatak Zavera Snowfield (, ) is the glacier extending in a north-south direction and in an east-west direction on southern Trinity Peninsula in Graham Land, Antarctica. It is located in the northeast foothills of Detroit Plateau, south of Diplock Gla ...

, northwest of the summit of Kopito Ridge, north-northeast of Mureno Peak. Precipitous, mostly ice-free west slopes. Surmounting Boydell Glacier to the west and south. Named after the settlement of Lobosh in Western Bulgaria.

Mureno Peak

. A rocky, mostly ice-free peak rising to high in the north part of Aldomir Ridge. Situated between Sjögren and Boydell Glaciers, south-southwest of Lobosh Peak, northwest of Mount Wild, north-northwest of Vetrovala Peak, north of Draka Nunatak, northeast of Mount Hornsby and southeast of Seydol Crag. British mapping in 1983. Named after the settlement of Mureno in Western Bulgaria.

Aldomir Ridge

. A mostly ice-free ridge on southern Trinity Peninsula bounded by Sjögren Glacier to the west and Boydell Glacier to the east. Extending between Detroit Plateau to the north-northwest and Sjögren Inlet to the south-southeast, wide and rising to high at its north extremity. Named after the settlement of

Aldomirovtsi Aldomirovtsi ( ) is a village in Slivnitsa Municipality, Sofia Province, in western Bulgaria approximately from Sofia. Aldomir Ridge in Antarctica is named after the village. References See also * Slivnitsa Slivnitsa ( ) is a town in wes ...

in Western Bulgaria.

Mount Wild

. Sharply defined rock ridge with several summits, the highest high, standing at the north side of the mouth of Sjogren Glacier. First charted by the FIDS in 1945 and named for

Frank Wild John Robert Francis Wild (18 April 1873 – 19 August 1939) was an English sailor and explorer. He participated in five expeditions to Antarctica during the Heroic Age of Antarctic Exploration, for which he was awarded the Polar Medal ...

Central features

Mount Daynes

. Also known as Vetrovala Peak (Bulgarian). Locally prominent peak rising to high at the south-eastern end of the promontory between Boydell and Sjögren glaciers. Named for Roger Daynes (b.1942), meteorologist and BC at Halley 1971-73. Co-founder, owner and Director of Snowsled Ltd 2000-16, manufacturers of Nansen sledges and pyramid tents for BAS since 1988 and designers and suppliers of polar equipment to many national polar research programmes and expeditions.

Royak Point

. A rocky point on the northwest coast of Sjögren Inlet in southern Trinity Peninsula formed by the southeast extremity of Aldomir Ridge. Situated southeast of Vetrovala Peak, west of the headland formed by Mount Wild, and northwest of the south side of the entrance to Sjögren Inlet. Formed as a result of the retreat of Sjögren Glacier and Boydell Glacier in the first decade of 21st century. Antarctic Digital Database mapping 2012. Named after the settlement of

Royak Royak is a village in Dalgopol Municipality, in Varna Province, eastern Bulgaria. Nursing home fire On 22 November 2021, a fire at a local nursing home killed nine of its 58 elderly residents, while the rest were evacuated. An investigation was ...

in Northeastern Bulgaria.

Sjögren Inlet

An inlet exposed following the retreat of Sjögren Glacier, approximately long running east-southeast from the base of Sjögren Glacier, into Prince Gustav Channel, north of Longing Peninsula. Named by UK Antarctic Place-names Committee (UK-APC) (2006) in association with Sjögren Glacier.

Sjögren Glacier Tongue

. A tongue of ice between {{coord, wide, extending {{convert, 15, nmi {{coord, from Sjögren Glacier across

toward

Persson Island Persson Island is an island 1.5 nautical miles (2.8 km) long, lying in the entrance to Rohss Bay on the southwest side of James Ross Island. Discovered by the Swedish Antarctic Expedition under Nordenskjold, 1901–04, and named by him for ...

. It was mapped from surveys by the

(FIDS) (1960–61). The glacier tongue was an extension of the flow of Sjögren Glacier from which it took its name.{{sfn, Alberts, 1995, p=679 It has disappeared since at least 1994, with its area now covered by the Prince Gustav Channel.{{fact, date=May 2024

Southern features

Hazarbasanov Ridge

{{coord, 64, 13, 07, S, 59, 16, 35, W. A mostly ice-free ridge {{convert, 5.5, km long, {{convert, 2.4, km wide and rising to {{convert, 1022, m{{sfn, Antarctic REMA Explorer, loc=64°13′07″S 59°16′35″W high on the southwest side of Sjögren Glacier. Situated {{convert, 4.34, km southeast of Mount Hornsby, {{convert, 6.57, km south of Survakari Nunatak, {{convert, 8.51, km west-southwest of Vetrovala Peak. Named after Dobri Hazarbasanov (b. 1960), physician at

St. Kliment Ohridski Base St. Kliment Ohridski Base (, ) is a Bulgarian Antarctic base on Livingston Island in the South Shetland Islands. The base, originally known as ''Sofia University Refuge'' or ''Hemus Base'', was named in 1993 for medieval Bulgarian scholar St. ...

during the 1995/96 and subsequent seasons.{{sfn, Hazarbasanov Ridge SCAR

Shortcut Col

{{coord, 64, 16, S, 59, 13, W. A wide col rising to over {{convert, 460, m immediately south of Mount Hornsby. Mapped from surveys by FIDS (1960-61). So named by UK-APC because this col provides a useful shortcut, avoiding the long detour through

Longing Gap The Longing Peninsula () is a peninsula long terminating in Cape Longing, situated at the northeast end of the Nordenskjöld Coast where it separates the Larsen Ice Shelf from the Prince Gustav Ice Shelf. Location The Longing Peninsula exten ...

Downham Peak

{{coord, 64, 17, S, 58, 54, W. A rock pyramid at the south side of the mouth of Sjögren Glacier. Mapped from surveys by FIDS (1960-61). Named by UK-APC for Noel Y. Downham, FIDS meteorological assistant at Hope Bay, who assisted in the triangulation of this area in 1961.{{sfn, Alberts, 1995, p=198

References

{{reflist, 25em

Sources

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Maxar Maxar Technologies Inc. is an American space technology company headquartered in Westminster, Colorado, United States, specializing in geospatial intelligence, Earth observation, and on-orbit servicing satellites, satellite products, and relate ...

imagery , title=Antarctic REMA Explorer , publisher=Polar Geospatial Center.

University of Minnesota The University of Minnesota Twin Cities (historically known as University of Minnesota) is a public university, public Land-grant university, land-grant research university in the Minneapolis–Saint Paul, Twin Cities of Minneapolis and Saint ...

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