Within-region replication of late Holocene relative sea-level change: An example from southern New England, United States
نویسندگان
چکیده
Tide-gauge measurements in the western North Atlantic Ocean show coherent, multi-decadal relative sea-level (RSL) trends across multiple spatial scales. Proxy reconstructions developed from salt-marsh sediment can extend this instrumental record. However, degree of coherence proxy is underexamined through within-region replication. To explore replication, we a new RSL reconstruction Fox Hill Marsh, Rhode Island to complement similar records at nearby sites. We established elevation former sea level assemblages foraminifera and bulk-sediment δ13C values using Bayesian transfer function. employed radiocarbon dating recognition pollution horizons construct core chronology. Since ∼1200 BCE, rose by ∼3.7 m Marsh. After correction for glacial isostatic adjustment, application statistical model intended quantify (multi-) century-scale showed that fastest rate rise least past 3000 years was 1.71 ± 0.84 mm/yr (95% credible interval) 2020 CE. This result replicates regional tide-gauge other reconstructions. Using an alternative constructed identify sub-centennial changes, examined if there hotspot 18th century northeastern United States found no spatially-coherent trend (i.e., occurring all or most sites). lack replication indicates accelerated during likely local (site-specific) scale, artifact individual Continued efforts replicate will increase confidence accuracy their subsequent interpretation.
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ژورنال
عنوان ژورنال: Quaternary Science Reviews
سال: 2023
ISSN: ['1873-457X', '0277-3791']
DOI: https://doi.org/10.1016/j.quascirev.2022.107868