Conclusions

The GIA contribution to sea-level change around Greenland arising from changes in the ice sheets outside of Greenland following the LGM, and the equivalent signal from the GIS, are of a similar magnitude, although differing in their spatial form. We also see how the manner in which the recent (few thousand years)

Table 45.1 Details of the tide-gauge stations and the time series used in this work. The station numbers correspond to those in Fig. 45.2: FRV, The Royal Danish Administration of Navigation and Hydrography; DMI, Danish Meteorological Institute

Station and authority Location General

Aasiaat (FRV) Sisimiut (FRV) Maniitsoq (FRV) Nuuk (Godthaab) (FRV, DMI)

Qaqortoq (FRV) Ammassalik (FRV)

68°43'N/52°53'W 66°56'N/53°40'W 65°25'N/52°54'W 64°10'N/51°44'W

1992-1997. No longer operational 1997-1999 1991-1999 1997-1999

1958-2001. No longer operational. Only data from 1970 is used since the station was moved in 1969 1991-1999 1990-1999

history of the GIS is treated is very important. The corresponding response from present-day changes in the GIS is generally smaller in magnitude and more restricted in extent, although the rates in areas experiencing the largest response are still of the order of millimetres per year. Unfortunately, the available tide-

gauge time series are generally not very useful owing to their short duration. Therefore, to constrain the load history of the GIS, other observations will need to be considered, such as crustal uplift as measured by GPS (e.g. Wahr et al., 2001), as well as the further analyses of geomorphological observations.

Was this article helpful?

0 0

Post a comment