Science Source
Climate related sea-level variations over the past two millennia
- Presents new sea-level reconstructions for the past 2100 y based on salt-marsh sedimentary sequences from the US Atlantic coast
- Looks at data from North Carolina that reveal four phases of persistent sea-level change after correction for glacial isostatic adjustment
- Finds that sea level was stable from at least BC 100 until AD 950 and then increased for 400 years at a rate of 0.6 mm/year, followed by a further period of stable, or slightly falling, sea level that persisted until the late 19th century
- Finds that, since the late 19th century, sea level has risen at an average rate of 2.1 mm/y, representing the steepest century-scale increase of the past two millennia
- Finds the rate was initiated between AD 1865 and 1892
- Uses an extended semiempirical modeling approach, and shows that these sea-level changes are consistent with global temperature for at least the past millennium
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