Sea levels might rise or fall if warming continuesSeptember 12th, 2011 - 3:28 pm ICT by IANS
Washington, Sep 12 (IANS) Sea levels might rise or fall if the trend of more recent warming continues unabated, as in the past, during a period known as the Last Interglacial, they were oscillating.
The new evidence unearthed by the Woods Hole Oceanographic Institution is based on sea level changes during a warm period about 125,000 years ago, known as the Last Interglacial.
“This was the last time that the climate was as warm as — or warmer than — today,” said WHOI geochronologist William G. Thompson, who led the study, the journal Nature Geoscience reports.
Sea levels during the Last Interglacial are known to have been about six metres (20 feet) higher, on average, than they are today.
“The real surprise is that sea levels were oscillating during this period,” said Thompson, according to a Woods Hole statement.
“If today’s ice sheets continue to melt, we may be headed for a period of ice sheet and sea-level change that is more dynamic than current observations of ice sheets suggest,” added Thompson.
The polar ice caps currently are shrinking and sea level is rising at a rate of about 30 cm (one foot) per century.
“How much sea level will rise over the next century or two is a crucial question for the significant part of the world’s population that lives in coastal zones,” Thompson said.
- Sea levels may rise much higher, says fossil study - Jul 16, 2012
- Greenland ice melted more than Antartica's - Aug 01, 2011
- How heat is transported to Greenland glaciers - Mar 29, 2011
- Global warming may cause Emperor penguins to vanish - Jun 21, 2012
- Moderate warming threatens polar ice sheet - Dec 17, 2009
- Extra 2 degrees of global warming could make sea level rise by 20 to 30 feet in future - Dec 17, 2009
- Global warming curbs won't prevent steep sea rise - Mar 21, 2012
- Scientists estimate sea level rise by studying past carbon dioxide levels - May 02, 2011
- Sea level rise may be even more urgent than previously thought - Dec 17, 2009
- Global warming will push up sea level - Jun 25, 2012
- Warm ocean currents cause ice loss from Antarctica - Apr 26, 2012
- Antarctic ice shelf faces threat from warm waters - May 10, 2012
- Modern humans reached Arabia earlier than previously believed - Jan 28, 2011
- Global warming threatens coral growth in Red Sea - Jul 16, 2010
- Ice age to interglacial period: Greatest climate change - Jul 24, 2012
Tags: climate, coastal zones, current observations, geoscience reports, hole oceanographic institution, journal nature, last time, new evidence, polar ice caps, population, sea level change, sea level changes, sea levels, surprise, thompson, warm period, whoi, woods hole oceanographic institution