Global climate changes recorded in coastal wetland sediments: Empirical observations linked to theoretical predictions
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Abstract
Whether coastal areas are experiencing, and responding to, an accelerated rate of global sea-level rise (GSLR) is critically important for the ∼2 billion people living near Earth's oceans. Accretion rates from a suite of physiographically diverse coastal wetlands surrounding Long Island, NY accelerated during the 20th century at 2.3 ± 0.2 × 10−2 mm yr−2, which is comparable to reported rates of GSLR acceleration and global temperature changes. Wetlands varied in tidal range, salinity and geomorphic setting, and were located in embayments with limited human impacts in a region with limited and constant rates of subsidence. From geochronologies with temporal resolutions of 2–5 yr, we constructed new composite histories of sediment accretion and mineral deposition. Wetland dynamics are consistent with predictions from sedimentology and a numerical model of ecogeomorphic response, suggesting that these systems, and likely others worldwide, are responding to accelerated GSLR and related climatic changes.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Global climate changes recorded in coastal wetland sediments: Empirical observations linked to theoretical predictions |
| Series title | Geophysical Research Letters |
| DOI | 10.1029/2010GL043874 |
| Volume | 37 |
| Year Published | 2010 |
| Language | English |
| Publisher | American Geophysical Union |
| Description | L14706, 5 p. |
| Country | United States |
| State | New York |
| Other Geospatial | Long Island |
| Google Analytic Metrics | Metrics page |