아문젠해 서남극 빙붕 용융과 영향에 대한 고찰: 연구동향 및 과학적 질문
Review of the Melting of West Antarctic Ice Shelves in the Amundsen Sea and Its Influence: Research Issues and Scientific Questions
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초록
The collapse of ice shelves is a process that can severely increase the rise of global sea-levels through the reduction of the buttressing effect of ice shelves and the consequent acceleration of the ice flow of ice sheets. In recent years, the West Antarctic ice shelves in the Amundsen Sea, whose buttressing effect is essential for a great part of the West Antarctic ice sheet, have been experiencing the most rapid melting and thinning in the world. The melting of the West Antarctic ice shelves is caused primarily by heat transported by Circumpolar Deep Water (CDW). For this reason, it is important to investigate ice-ocean interactions that could influence the melting of ice shelves and evaluate the stability of West Antarctic ice shelves. A lot of researchers have been actively investigating the West Antarctic ice shelves in the Amundsen Sea. High-impact journals have recognized the importance of and published studies on ice-ocean interactions occurring near and under the ice shelves as well as the connections among ice shelves. However, in situ observations are limited due to extreme weather and sea-ice conditions near the ice shelves; therefore, many scientific questions remain unanswered. This study introduces the characteristics of the Amundsen Sea and investigate the past and latest research issues in this region. This study also gives suggestions regarding important scientific questions and directions for future research that should help early-career scientists take the lead in future research on the melting dynamics of the West Antarctic ice shelves in the Amundsen Sea.
Abstract
The collapse of ice shelves is a process that can severely increase the rise of global sea-levels through the reduction of the buttressing effect of ice shelves and the consequent acceleration of the ice flow of ice sheets. In recent years, the West Antarctic ice shelves in the Amundsen Sea, whose buttressing effect is essential for a great part of the West Antarctic ice sheet, have been experiencing the most rapid melting and thinning in the world. The melting of the West Antarctic ice shelves is caused primarily by heat transported by Circumpolar Deep Water (CDW). For this reason, it is important to investigate ice-ocean interactions that could influence the melting of ice shelves and evaluate the stability of West Antarctic ice shelves. A lot of researchers have been actively investigating the West Antarctic ice shelves in the Amundsen Sea. High-impact journals have recognized the importance of and published studies on ice-ocean interactions occurring near and under the ice shelves as well as the connections among ice shelves. However, in situ observations are limited due to extreme weather and sea-ice conditions near the ice shelves; therefore, many scientific questions remain unanswered. This study introduces the characteristics of the Amundsen Sea and investigate the past and latest research issues in this region. This study also gives suggestions regarding important scientific questions and directions for future research that should help early-career scientists take the lead in future research on the melting dynamics of the West Antarctic ice shelves in the Amundsen Sea.
참고문헌 (119)
- Adusumilli S, "Interannual variations in meltwater input to the Southern Ocean from Antarctic ice shelves", Nat Geosci, 13(9), pp.616~620 (2020)[DOI]
- Arneborg L, "Persistent inflow of warm water onto the central Amundsen shelf", Nat Geosci, 5(12), pp.876~880 (2012)[DOI]
- Arrigo KR, "Annual changes in sea ice and phytoplankton in polynyas of the Amundsen Sea, Antarctica", Deep-Sea Res Pt II, 71(76), pp.5~15 (2012)[DOI]
- Arrigo KR, "Phytoplankton dynamics within 37 Antarctic coastal polynya systems", J Geophys Res-Oceans, 108(C8), pp.27-1–27-18~ (2003)[DOI]
- Arthern RJ, "The sensitivity of West Antarctica to the submarine melting feedback", Geophys Res Lett, 44(5), pp.2352~2359 (2017)[DOI]
- Assmann KM, "Variability of Circumpolar Deep Water transport onto the Amundsen Sea Continental shelf through a shelf break trough", J Geophys Res-Oceans, 118(12), pp.6603~6620 (2013)[DOI]
- Barker PF, "Onset and role of the Antarctic Circumpolar Current", Deep-Sea Res Pt II, 54(21–22), pp.2388~2398 (2007)[DOI]
- Baumhoer CA, "Environmental drivers of circum-Antarctic glacier and ice shelf front retreat over the last two decades", Cryosphere, 15(5), pp.2357~2381 (2021)[DOI]
- Biddle LC, "Glacial meltwater identification in the Amundsen Sea", J Phys Oceanogr, 47(4), pp.933~954 (2017)[DOI]
- Biddle LC, "Upper ocean distribution of glacial meltwater in the Amundsen Sea, Antarctica", J Geophys Res-Oceans, 124(10), pp.6854~6870 (2019)[DOI]
- Bintanja R, "Important role for ocean warming and increased ice-shelf melt in Antarctic sea-ice expansion", Nat Geosci, 6(5), pp.376~379 (2013)[DOI]
- Boehme L, "Classifying Oceanographic Structures in the Amundsen Sea, Antarctica", Geophys Res Lett, 48(5), pp.1~8 (2021)[DOI]
- Bradley AT, "The influence of Pine Island Ice Shelf calving on basal melting", J Geophys Res-Oceans, 127(9), pp.1~27 (2022)[DOI]
- Budillon G, "Thermohaline variability and Antarctic bottom water formation at the Ross Sea shelf break", Deep-Sea Res Pt I, 58(10), pp.1002~1018 (2011)[DOI]
- Castagno P, "Rebound of shelf water salinity in the Ross Sea", Nat Commun, 10(1), pp.5441~ (2019)[DOI]
- Christianson K, "Sensitivity of Pine Island Glacier to observed ocean forcing", Geophys Res Lett, 43(20), pp.10817~10825 (2016)[DOI]
- Davis PED, "Variability in basal melting beneath Pine Island Ice Shelf on weekly to monthly timescales", J Geophys Res-Oceans, 123(11), pp.8655~8669 (2018)[DOI]
- Davis PED, "Suppressed basal melting in the eastern Thwaites Glacier grounding zone", Nature, 614(7948), pp.479~485 (2023)[DOI]
- De Rydt J, "Coupled ice shelf-ocean modeling and complex grounding line retreat from a seabed ridge", J Geophys Res-Earth Surf, 121(5), pp.865~880 (2016)[DOI]
- De Rydt J, "Geometric and oceanographic controls on melting beneath Pine Island Glacier", J Geophys Res-Oceans, 119(4), pp.2420~2438 (2014)[DOI]
- De Rydt J, "Drivers of Pine Island Glacier speed-up between 1996 and 2016", Cryosphere, 15(1), pp.113~132 (2021)[DOI]
- Dotto TS, "Ocean variability beneath Thwaites Eastern Ice Shelf driven by the Pine Island Bay Gyre strength", Nat Commun, 13(1), pp.7840~ (2022)[DOI]
- Dotto TS, "Variability of the Ross Gyre, Southern Ocean : drivers and responses revealed by satellite altimetry", Geophys Res Lett, 45(12), pp.6195~6204 (2018)[DOI]
- Dotto TS, "Wind-driven processes controlling oceanic heat delivery to the Amundsen Sea, Antarctica", J Phys Oceanogr, 49(11), pp.2829~2849 (2019)[DOI]
- Dutrieux P, "Strong sensitivity of Pine Island Ice-Shelf melting to climatic variability", Science, 343(6167), pp.174~178 (2014)[DOI]
- Dutrieux P, "Basal terraces on melting ice shelves", Geophys Res Lett, 41, pp.5506~5513 (2014)[DOI]
- Feldmann J, "Collapse of the West Antarctic Ice Sheet after local destabilization of the Amundsen Basin", Proc Natl Acad Sci USA, 112(46), pp.14191~14196 (2015)[DOI]
- Fretwell P, "Bedmap2 : improved ice bed, surface and thickness datasets for Antarctica", Cryosphere, 7(1), pp.375~393 (2013)[DOI]
- Garabato AC, "Vigorous lateral export of the meltwater outflow from beneath an Antarctic ice shelf", Nature, 542(7640), pp.219~222 (2017)[DOI]
- Goldberg DN, "Bathymetric influences on Antarctic Ice-Shelf melt rates", J Geophys Res-Oceans, 125(11), pp.e2020~ (2020)[DOI]
- Gómez-Valdivia F, "Projected West Antarctic Ocean Warming caused by an Expansion of the Ross Gyre", Geophys Res Lett, 50(6) (2023)[DOI]
- Greene CA, "Antarctic calving loss rivals ice-shelf thinning", Nature, 609(7929), pp.948~953 (2022)[DOI]
- Gudmundsson GH, "Ice-shelf buttressing and the stability of marine ice sheets", Cryosphere, 7(2), pp.647~655 (2013)[DOI]
- Ha HK, "Circulation and modification of warm deep water on the central Amundsen Shelf", J Phys Oceanogr, 44(5), pp.1493~1501 (2014)[DOI]
- Heimbach P, "Adjoint sensitivities of subice-shelf melt rates to ocean circulation under the Pine Island Ice Shelf, West Antarctica", Ann of Glaciol, 53(60), pp.59~69 (2012)[DOI]
- Hellmer HH, "Twenty-first-century warming of a large Antarctic ice-shelf cavity by a redirected coastal current", Nature, 485(7397), pp.225~228 (2012)[DOI]
- Hellmer HH, "The fate of the Southern Weddell Sea Continental Shelf in a warming climate", J Clim, 30(12), pp.4337~4350 (2017)[DOI]
- Heywood K, "Between the devil and the deep blue sea : the role of the Amundsen Sea Continental Shelf in exchanges between ocean and ice shelves", Oceanogr, 29(4), pp.118~129 (2016)[DOI]
- Hogan KA, "Revealing the former bed of Thwaites Glacier using sea-floor bathymetry : implications for warm-water routing and bed controls on ice flow and buttressing", Cryosphere, 14(9), pp.2883~2908 (2020)[DOI]
- Holland DM, "The Southern Ocean and its interaction with the Antarctic Ice Sheet", Science, 367(6484), pp.1326~1330 (2020)[DOI]
- Holland PR, "West Antarctic ice loss influenced by internal climate variability and anthropogenic forcing", Nat Geosci, 12(9), pp.718~724 (2019)[DOI]
- "Special report on the ocean and cryosphere in a changing climate" (2019)[URL]
- "Sixth Assessment Report(AR6)synthesis report : climate change 2023" (2023)[URL]
- Jacobs S, "Getz Ice Shelf melting response to changes in ocean forcing", J Geophys Res-Oceans, 118(9), pp.4152~4168 (2013)[DOI]
- Jacobs S, "The Amundsen Sea and the Antarctic Ice sheet", Oceanogr, 25(3), pp.154~163 (2012)[DOI]
- Jacobs SS, "Large multidecadal salinity trends near the Pacific–Antarctic Continental Margin", J Clim, 23(17), pp.4508~4524 (2010)[DOI]
- Jacobs SS, "Freshening of the Ross Sea during the late 20th century", Science, 297(5580), pp.386~389 (2002)[DOI]
- Jacobs SS, "Melting of ice shelves and the mass balance of Antarctica", J Glaciol, 38(130), pp.375~387 (1992)[DOI]
- Jacobs SS, "Stronger ocean circulation and increased melting under Pine Island Glacier Ice Shelf", Nat Geosci, 4(8), pp.519~523 (2011)[DOI]
- Jenkins A, "The impact of melting ice on ocean waters", J Phys Oceanogr, 29(9), pp.2370~2381 (1999)[DOI]
- Jenkins A, "Decadal ocean forcing and Antarctic ice sheet response : lessons from the Amundsen Sea", Oceanogr, 29(4), pp.106~117 (2016)[DOI]
- Jenkins A, "West Antarctic ice sheet retreat in the Amundsen Sea driven by decadal oceanic variability", Nat Geosci, 11(10), pp.733~738 (2018)[DOI]
- Jeong S, "Accelerated ice shelf rifting and retreat at Pine Island Glacier, West Antarctica", Geophys Res Lett, 43(22) (2016)[DOI]
- Joughin I, "Stability of the West Antarctic ice sheet in a warming world", Nat Geosci, 4(8), pp.506~513 (2011)[DOI]
- Joughin I, "Marine ice sheet collapse potentially under way for the Thwaites Glacier Basin, West Antarctica", Science, 344(6185), pp.735~738 (2014)[DOI]
- Jourdain NC, "Ocean circulation and sea-ice thinning induced by melting ice shelves in the Amundsen Sea", J Geophys Res-Oceans, 122, pp.2250~2573 (2017)[DOI]
- Jourdain NC, "Simulating or prescribing the influence of tides on the Amundsen Sea ice shelves", Ocean Model, 133, pp.44~55 (2019)[DOI]
- Jun SY, "The internal origin of the west-east asymmetry of Antarctic climate change", Sci Adv, 6(24), pp.eaaz1490~ (2020)[DOI]
- Kalén O, "Is the oceanic heat flux on the central Amundsen sea shelf caused by barotropic or baroclinic currents?", Deep-Sea Res Pt II, 123, pp.7~15 (2016)[DOI]
- Kim C-S, "Variability of the Antarctic coastal current in the Amundsen Sea", Estuar Coast Shelf Sci, 181, pp.123~133 (2016)[DOI]
- Kimura S, "Oceanographic controls on the variability of ice-shelf basal melting and circulation of glacial meltwater in the Amundsen Sea Embayment, Antarctica", J Geophys Res-Oceans, 122(12), pp.10131~10155 (2017)[DOI]
- Klinck JM, "Heat and salt changes on the continental shelf west of the Antarctic Peninsula between January 1993 and January 1994", J Geophys Res-Oceans, 103(C4), pp.7617~7636 (1998)[DOI]
- Le Brocq AM, "Evidence from ice shelves for channelized meltwater flow beneath the Antarctic Ice Sheet", Nat Geosci, 6(11), pp.945~948 (2013)[DOI]
- Macdonald GJ, "Evolution of the dynamics, area, and ice production of the Amundsen Sea Polynya, Antarctica, 2016–2021", Cryosphere, 17(2), pp.457~476 (2023)[DOI]
- Mallett HKW, "Variation in the distribution and properties of circumpolar deep water in the Eastern Amundsen Sea, on seasonal timescales, using seal-borne tags", Geophys Res Lett, 45(10), pp.4982~4990 (2018)[DOI]
- Malyarenko A, "A wedge mechanism for summer surface water in flow into the Ross Ice Shelf Cavity", J Geophys Res-Oceans, 124(2), pp.1196~1214 (2019)[DOI]
- Miles T, "Glider observations of the Dotson Ice Shelf outflow", Deep-Sea Res Pt II, 123, pp.16~29 (2016)[DOI]
- Milillo P, "Heterogeneous retreat and ice melt of Thwaites Glacier, West Antarctica", Sci Adv, 5(1), pp.eaau3433~ (2019)[DOI]
- Morlighem M, "Deep glacial troughs and stabilizing ridges unveiled beneath the margins of the Antarctic ice sheet", Nat Geosci, 13(2), pp.132~137 (2020)[DOI]
- Nakayama Y, "Pathways of ocean heat towards Pine Island and Thwaites grounding lines", Sci Rep, 9(1), pp.16649~ (2019)[DOI]
- Nakayama Y, "Amundsen and Bellingshausen Seas simulation with optimized ocean, sea ice, and thermodynamic ice shelf model parameters", J Geophys Res-Oceans, 122(8), pp.6180~6195 (2017)[DOI]
- Nakayama Y, "Origin of Circumpolar Deep Water intruding onto the Amundsen and Bellingshausen Sea continental shelves", Nat Commun, 9(1), pp.3403~ (2018)[DOI]
- Nakayama Y, "Impact of West Antarctic ice shelf melting on Southern Ocean hydrography", Cryosphere, 14(7), pp.2205~2216 (2020)[DOI]
- Nakayama Y, "On the difficulty of modeling Circumpolar Deep Water intrusions onto the Amundsen Sea continental shelf", Ocean Model, 84, pp.26~34 (2014)[DOI]
- Oh JH, "Impact of Antarctic meltwater forcing on East Asian Climate under greenhouse warming", Geophys Res Lett, 47(21) (2020)[DOI]
- Orsi AH, "On the meridional extent and fronts of the Antarctic Circumpolar Current", Deep-Sea Res Pt I, 42(5), pp.641~673 (1995)[DOI]
- Orsi AH, "A recount of Ross Sea waters", Deep-Sea Res Pt II, 56(13–14), pp.778~795 (2009)[DOI]
- Paolo FS, "Volume loss from Antarctic ice shelves is accelerating", Science, 348(6232), pp.327~331 (2015)[DOI]
- Planquette H, "Particulate iron delivery to the water column of the Amundsen Sea, Antarctica", Mar Chem, 153, pp.15~30 (2013)[DOI]
- Pritchard HD, "Antarctic ice-sheet loss driven by basal melting of ice shelves", Nature, 484(7395), pp.502~505 (2012)[DOI]
- Purkey SG, "Antarctic bottom water warming and freshening : contributions to sea level rise, ocean freshwater budgets, and global heat gain", J Clim, 26(16), pp.6105~6122 (2013)[DOI]
- Reese R, "The far reach of ice-shelf thinning in Antarctica", Nat Clim Change, 8(1), pp.53~57 (2018)[DOI]
- Rignot E, "Recent Antarctic ice mass loss from radar interferometry and regional climate modelling", Nat Geosci, 1(2), pp.106~110 (2008)[DOI]
- Rignot E, "Ice-shelf melting around Antarctica", Science, 341(6143), pp.266~270 (2013)[DOI]
- Rignot E, "Widespread, rapid grounding line retreat of Pine Island, Thwaites, Smith, and Kohler glaciers, West Antarctica, from 1992 to 2011", Geophys Res Lett, 41(10), pp.3502~3509 (2014)[DOI]
- Rignot E, "Four decades of Antarctic ice sheet mass balance from 1979–2017", Proc Natl Acad Sci USA, 116(4), pp.1095~1103 (2019)[DOI]
- Robinson NJ, "Evolution of a supercooled ice shelf water plume with an actively growing subice platelet matrix", J Geophys Res-Oceans, 119(6), pp.3425~3446 (2014)[DOI]
- Scambos TA, "How much, how fast? : a science review and outlook for research on the instability of Antarctica's Thwaites Glacier in the 21st century", Glob Planet Change, 153, pp.16~34 (2017)[DOI]
- Schmidt BE, "Heterogeneous melting near the Thwaites Glacier grounding line", Nature, 614(7948), pp.471~478 (2023)[DOI]
- Schmidtko S, "Multidecadal warming of Antarctic waters", Science, 346(6214), pp.1227~1231 (2014)[DOI]
- Schodlok MP, "Sensitivity of the ice-shelf", ocean system to the sub-iceshelf cavity shape measured by NASA IceBridge in Pine Island Glacier, West Antarctica, 2017, pp.53(60), 156~162
- Schroeder DM, "Evidence for a water system transition beneath Thwaites Glacier, West Antarctica", Proc Natl Acad Sci USA, 110(30), pp.12225~ (2013)[DOI]
- Shepherd A, "A reconciled estimate of ice-sheet mass balance", Science, 338(6114), pp.1539~1539 (2012)
- Silvano A, "Recent recovery of Antarctic Bottom Water formation in the Ross Sea driven by climate anomalies", Nat Geosci, 13(12), pp.780~786 (2020)[DOI]
- Silvano A, "Freshening by glacial meltwater enhances melting of ice shelves and reduces formation of Antarctic Bottom Water", Sci Adv, 4(4) (2018)[DOI]
- Smith B, "Pervasive ice sheet mass loss reflects competing ocean and atmosphere processes", Science, 368(6496), pp.1239~1242 (2020)[DOI]
- St-Laurent P, "On the role of coastal troughs in the circulation of warm circumpolar deep water on Antarctic shelves", J Phys Oceanogr, 43, pp.51~64 (2013)[DOI]
- St-Laurent P, "Impact of local winter cooling on the melt of Pine Island Glacier, Antarctica", J Geophys Res-Oceans, 120(10), pp.6718~6732 (2015)[DOI]
- Talley LD, "Descriptive physical oceanography", pp.543~ (2011), Elsevier
- Thoma M, "Modelling Circumpolar Deep Water intrusions on the Amundsen Sea Continental Shelf, Antarctica", Geophys Res Lett, 35(18), pp.L18602~ (2008)[DOI]
- Thomas G, "Spatial variability of Antarctic Bottom Water in the Australian Antarctic Basin from 2018–2020 captured by deep Argo", Geophys Res Lett, 47(23), pp.L089467~ (2020)[DOI]
- Thurnherr AM, "Export and circulation of ice cavity water in Pine Island Bay, West Antarctica", J Geophys Res-Oceans, 119(3), pp.1754~1764 (2014)[DOI]
- Wåhlin AK, "Pathways and modification of warm water flowing beneath Thwaites Ice Shelf, West Antarctica", Sci Adv, 7(15) (2021)[DOI]
- Wåhlin AK, "Variability of warm deep water inflow in a submarine trough on the Amundsen Sea shelf", J Phys Oceanogr, 43(10), pp.2054~2070 (2013)[DOI]
- Wåhlin AK, "Some implications of Ekman layer dynamics for cross-shelf exchange in the Amundsen Sea", J Phys Oceanogr, 42(9), pp.1461~1474 (2012)[DOI]
- Wåhlin AK, "Ice front blocking of ocean heat transport to an Antarctic ice shelf", Nature, 578(7796), pp.568~571 (2020)[DOI]
- Wåhlin AK, "Inflow of warm Circumpolar Deep Water in the central Amundsen shelf", J Phys Oceanogr, 40(6), pp.1427~1434 (2010)[DOI]
- Walker DP, "Oceanic heat transport onto the Amundsen Sea shelf through a submarine glacial trough", Geophys Res Lett, 34(2) (2007)[DOI]
- Walker DP, "Oceanographic observations at the shelf break of the Amundsen Sea, Antarctica", J Geophys Res-Ocean, 118(6), pp.2906~2918 (2013)[DOI]
- Webber BG, "Mechanisms driving variability in the ocean forcing of Pine Island Glacier", Nat Commun, 8, pp.14507~ (2017)[DOI]
- Webber BGM, "The impact of overturning and horizontal circulation in Pine Island trough on ice shelf melt in the Eastern Amundsen Sea", J Phys Oceanogr, 49(1), pp.63~83 (2019)[DOI]
- Wei W, "Getz Ice Shelf melt enhanced by freshwater discharge from beneath the West Antarctic Ice Sheet", Cryosphere, 14(4), pp.1399~1408 (2020)[DOI]
- Whitworth T III, "Water masses and mixing near the Antarctic slope front, in ocean, ice and atmosphere: interactions at the Antarctic continental margin", American Geophysical Union, 27~ (1998)
- Yang HW, "Seasonal variability of ocean circulation near the Dotson Ice Shelf, Antarctica", Nat Commun, 13(1), pp.1138~ (2022)[DOI]
- Yoon ST, "Ice front retreat reconfigures meltwater-driven gyres modulating ocean heat delivery to an Antarctic ice shelf", Nat Commun, 13(1), pp.306~ (2022)[DOI]
- Yoon S-T, "Variability in high-salinity shelf water production in the Terra Nova Bay Polynya, Antarctica", Ocean Sci, 16(2), pp.373~388 (2020)[DOI]
- Yu H, "Impact of iceberg calving on the retreat of Thwaites Glacier, West Antarctica over the next century with different calving laws and ocean thermal forcing", Geophys Res Lett, 46(24), pp.14539~14547 (2019)[DOI]
- Zheng Y, "Winter seal-based observations reveal glacial meltwater surfacing in the Southeastern Amundsen Sea", Commun Earth Environ, 2(1), pp.40~ (2021)[DOI]
- Zheng Y, "Reversal of ocean gyres near ice shelves in the Amundsen Sea caused by the interaction of sea ice and wind", Cryosphere, 16(7), pp.3005~3019 (2022)[DOI]
