Archives par mot-clé : Tuvalu

New Study: Sea Levels Around Japan Are ‘Not Rising, Nor Accelerating’ Since The 1800s

by K. Richard, Feb 4, 2025 in NoTricksZone

In a region of the world where tide gauges are not compromised by land subsidence or uplift, sea levels have not been observed to be rising since measurements began in 1894.

According to a new study, when sea levels rise it usually has more to do with declining land movement (subsidence) or 20- to 60-year oscillations than it has to do with thermostatic sea level change.

“In Japan, there are many long-term trend tide gauges recording the sea levels since 1894. The tide gauges of Hosojima, Wajima, Tonoura, and Oshoro, not suffering from subsidence or isostasy, show multi-decadal fluctuations of periodicity quasi-20 and quasi-60 years, but not rising, nor accelerating, relative sea levels.”

Another study published earlier in the year by the same author (Boretti, 2024) indicates the sea level pattern around Japan is similarly occurring around the Polynesian island of Tuvalu.

Sea level changes are said to be influenced more by multi-decadal oscillations and land subsidence than by a global change in the amount of water stored in ocean basins.

“The significant increase in sea level observed at Tuvalu’s current tide gauge is attributed more to multidecadal oscillations, significantly affecting short-term records, and the subsidence of the tide gauge, rather than the global thermosteric contribution.”

“The suggested analysis aligns with prior research, reinforcing the perspective that the sea levels are gently rising and the surfaced area of Pacific islands and atolls is not diminishing, contrary to inaccuracies found in selective studies that emphasize certain data while disregarding others.”

Study: Pacific Islands Will Survive Climate Change

by Eric Worrall, July 17, 2019 in WUWT


Who could have imagined that islands which survived rapid sea level rise at the end of the last ice age have no problem coping with changes in sea level?

Media Release
From: University of Auckland

Pacific atolls can adapt to rising seas and extreme storms – new study

Low-lying Pacific islands in atoll archipelagos such as Tuvalu, Tokelau and Kiribati are likely to adapt to the effects of climate change rather than simply sink beneath the waves, a new study shows.

Tuvalu, Tokelau and Kiribati are widely considered under threat from rising seas and severe storms due to climate change with their residents becoming ‘climate refugees’.

Researchers from the University of Auckland’s School of Environment recreated a scale model of tiny Fatato Island on the southeast rim of Funafuti Atoll in Tuvalu to test the ability of the real island to withstand predicted climate affects.

The study simulated higher sea levels and storm-generated waves up to 4m in a 20m-long water chute or ‘flume’ to replicate real-world sea levels of 0.5m and 1m in a purpose built laboratory at the University of Plymouth in the United Kingdom.

A beach at Funafuti atoll, Tuvalu, on a sunny day. Author Stefan Lins, source Wikimedia

Is the Pacific island nation of Tuvalu growing, and not sinking, as Craig Kelly says?

by RMIT ABC fact Check, December 21, 2018


The claim

Liberal MP and climate sceptic Craig Kelly made headlines in November when he was caught on tape mocking “lefties” for exaggerating the effects of climate change.

Speaking at a local party event, audio of which was leaked to the Guardian, Mr Kelly set out to debunk several justifications for climate change action, including the argument that Tuvalu, the Pacific island nation, was slipping beneath the sea.

“The science tells us that Tuvalu, which I often hear about, is actually growing not sinking,” he told colleagues.

Is Tuvalu growing? RMIT ABC Fact Check investigates.

The verdict

Mr Kelly’s claim checks out.

In the four decades to 2014, Tuvalu’s total land area grew by 73 hectares, or 2.9 per cent.