Complications involving the
drift arctic
sea ice — precisely the sort of complications that makes such an operation
so treacherous in the first place, and
so opposed by environmentalists and local residents — forced the operation to cease mere hours after it had gotten underway.
To summarise the arguments presented
so far concerning
ice - loss in the arctic basin, at least four mechanisms must be recognised: (i) a momentum - induced slowing of winter
ice formation, (ii) upward heat - flux from anomalously warm Atlantic water through the surface low ‐ salinity layer below the
ice, (iii) wind patterns that cause the export of anomalous amounts of
drift ice through the Fram Straits and disperse pack -
ice in the western basin and (iv) the anomalous flux of warm Bering
Sea water into the eastern Arctic of the mid 1990s.