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| Prince Harald Coast | |
|---|---|
| Name | Prince Harald Coast |
| Location | Queen Maud Land, Antarctica |
| Coordinates | 71°S 9°E to 75°S 20°E |
| Length km | 400 |
| Country | Antarctica (claim by Norway) |
| Region | Princess Martha Coast, Princess Astrid Coast vicinity |
Prince Harald Coast is a coastal sector of Queen Maud Land in Antarctica lying between the beginnings of the Riiser-Larsen Ice Shelf and adjacent sectors of the Weddell Sea margin. The coast forms part of the larger sequence of named coasts along the Princess Martha Coast and the Princess Astrid Coast and is notable for its proximity to the Sør Rondane Mountains, the Jutulstraumen Glacier, and several research routes used by Norwegian Antarctic expeditions and British Antarctic Survey teams.
The Prince Harald Coast occupies a segment of eastern Queen Maud Land bounded by ice fronts and rock outcrops including sections near the Jutulstraumen Glacier, the Fimbul Ice Shelf, and adjacent to mountains such as the Sør Rondane Mountains and the Gjelsvik Mountains. Coastal features include ice shelves, grounding lines feeding into the Weddell Sea, nunataks that connect to the Fenriskjeften Mountain region, and glacial troughs leading inland toward the East Antarctic Ice Sheet. Nearest named stations and logistics hubs include Troll (research station), Mawson Station, and historical field camps from Operation Tabarin. Maritime approaches have been charted in coordination with Norwegian Polar Institute mapping and International Hydrographic Organization conventions.
The coastal segment was first photographed and partially charted during early 20th-century aerial surveys conducted by Lars Christensen–sponsored expeditions and later by Third German Antarctic Expedition (1938–39). Subsequent mapping relied on surveys by Norwegian–British–Swedish Antarctic Expedition teams and U.S. Navy Operation Highjump reconnaissance flights. The name commemorates a member of the Norwegian royal family and was formalized through submissions by the Norwegian Polar Institute to the Advisory Committee on Antarctic Names and the Scientific Committee on Antarctic Research toappear on international charts. Expeditions by Sir Ernest Shackleton and contemporaneous Antarctic voyages provided regional context though did not specifically chart this coast.
Bedrock exposures near the coast provide access to Precambrian and Cambro-Ordovician terranes linked to the Gondwana assembly and the East Antarctic Shield studied in comparison with outcrops at Sør Rondane Mountains and Heimefrontfjella. Glacial dynamics are dominated by outlet glaciers such as the Jutulstraumen Glacier and ice streams feeding the Fimbul Ice Shelf, with investigations referencing methods used by Glacial Systems Research groups and satellite missions including Landsat, ICESat, and CryoSat. Subglacial topography revealed by radar surveys connects to hypotheses advanced by researchers at British Antarctic Survey and Norwegian Polar Institute concerning basal hydrology, grounding line migration, and ice-shelf buttressing interactions with the Weddell Sea thermohaline regime.
The coastal climate is polar maritime with katabatic winds descending from interior ice divides near the East Antarctic Ice Sheet and temperature regimes monitored by stations such as Troll (research station) and Dronning Maud Land Air Network party. Atmospheric research has linked regional variability to patterns observed in Southern Annular Mode studies and to El Niño–Southern Oscillation teleconnections assessed by teams from National Oceanic and Atmospheric Administration and Australian Antarctic Division. Sea-ice extent and seasonal variability near the coast are tracked via satellite data from European Space Agency missions and compared against long-term records maintained by the Scientific Committee on Antarctic Research and the World Meteorological Organization.
Terrestrial life is limited to microbial mats, lichen communities, and cryptogams found on coastal nunataks and rocky exposures similar to assemblages documented in the Sør Rondane Mountains and around Prince Harald Coast proximate outcrops. Marine ecosystems adjacent to the coast host Antarctic krill, Adélie penguin, Emperor penguin colonies in nearby sectors, and marine mammal visitors including Weddell seal, Crabeater seal, and occasional Orca predation events recorded by observers from Australian Antarctic Division and British Antarctic Survey field teams. Studies by the Commission for the Conservation of Antarctic Marine Living Resources and biodiversity assessments by SCAR provide regional species inventories and conservation status.
Scientific activity in the area has been conducted by Norwegian Antarctic expeditions, British Antarctic Survey, Japanese Antarctic Research Expedition, and collaborative programs involving United States Antarctic Program logistics. Nearby permanent and seasonal facilities include Troll (research station), logistical field camps associated with Operation Deep Freeze, and historic depots from early 20th-century expeditions. Research topics include ice-sheet dynamics, paleoclimate reconstructions from ice cores analogous to work at Dome C and Dome Fuji, marine biology surveys aligned with CCAMLR objectives, and atmospheric monitoring contributing to databases maintained by WMO and SCAR.
The coast lies within the sector claimed by Norway as part of Queen Maud Land and administered in accordance with arrangements under the Antarctic Treaty System, which also involves consultative parties such as the United States, United Kingdom, Russia, Japan, Australia, and Argentina in scientific cooperation. Sovereignty claims are held in abeyance under treaty provisions; logistics, environmental management, and search-and-rescue responsibilities are coordinated through consultative meetings of the Antarctic Treaty Consultative Meeting and compliance with instruments like the Madrid Protocol on environmental protection. Category:Coasts of Queen Maud Land