This article presents an analysis of shoreline change in all 101 islands in the Pacific atoll nation of Tuvalu. Using remotely sensed data, change is analysed over the past four decades, a period when local sea level has risen at twice the global average (~3.90 ± 0.4 mm.yr−1). Results highlight a net increase in land area in Tuvalu of 73.5 ha (2.9%), despite sea-level rise, and land area increase in eight of nine atolls.
The results of this academic study stated that the sea level rise rate in Tuvalu as at September 2008 was 5.9 mm year−1, based upon the 15½ years of sea level data. This was about four times higher than the global average of 1-2 mm year−1.
Sea level in Tuvalu area had risen approximately 9.14 cm since the inception of the project 15½ years ago. However, it was to be noted that the land is quite stable and the rate of land sinking is -0.06 mM year−1 only.
Hajime KAYANNE, Masashi CHIKAMORI, Hiroya YAMANO, Toru YAMAGUCHI, Hiromune YOKOKI and Hiroto SHIMAZAKI 2005