Publicaties | Kaarten

nieuwe zoekopdracht

[ meld een fout in dit record ]mandje (0): toevoegen | toon Print deze pagina
Pathways of ocean heat towards Pine Island and Thwaites grounding lines
Nakayama, Y.; Manucharyan, G.; Zhang, H.; Dutrieux, P.; Torres, H.S.; Klein, P.; Seroussi, H.; Schodlok, M.; Rignot, E.; Menemenlis, D. (2019). Pathways of ocean heat towards Pine Island and Thwaites grounding lines. NPG Scientific Reports 9(1): 9 pp. https://dx.doi.org/10.1038/s41598-019-53190-6
In: Scientific Reports (Nature Publishing Group). Nature Publishing Group: London. ISSN 2045-2322; e-ISSN 2045-2322
Peer reviewed article  
Beschikbaar in  Auteurs 
Auteurs  Top 
  • Nakayama, Y.
  • Manucharyan, G.
  • Zhang, H.
  • Dutrieux, P.
  • Torres, H.S.
  • Klein, P.
  • Seroussi, H.
  • Schodlok, M.
  • Rignot, E.
  • Menemenlis, D.
Abstract
    In the Amundsen Sea, modified Circumpolar Deep Water (mCDW) intrudes into ice shelf cavities, causing high ice shelf melting near the ice sheet grounding lines, accelerating ice flow, and controlling the pace of future Antarctic contributions to global sea level. The pathways of mCDW towards grounding lines are crucial as they directly control the heat reaching the ice. A realistic representation of mCDW circulation, however, remains challenging due to the sparsity of in-situ observations and the difficulty of ocean models to reproduce the available observations. In this study, we use an unprecedentedly high-resolution (200 m horizontal and 10 m vertical grid spacing) ocean model that resolves shelf-sea and sub-ice-shelf environments in qualitative agreement with existing observations during austral summer conditions. We demonstrate that the waters reaching the Pine Island and Thwaites grounding lines follow specific, topographically-constrained routes, all passing through a relatively small area located around 104°W and 74.3°S. The temporal and spatial variabilities of ice shelf melt rates are dominantly controlled by the sub-ice shelf ocean current. Our findings highlight the importance of accurate and high-resolution ocean bathymetry and subglacial topography for determining mCDW pathways and ice shelf melt rates.
Alle informatie in het Integrated Marine Information System (IMIS) valt onder het VLIZ Privacy beleid Top | Auteurs 
IMIS is ontwikkeld en wordt gehost door het VLIZ.