Authors
Frank Oliva, MC Peros, AE Viau, EG Reinhardt, FC Nixon, A Morin
Publication date
2018/12/1
Journal
Marine Geology
Volume
406
Pages
84-97
Publisher
Elsevier
Description
This study presents a multi-proxy reconstruction of tropical cyclone (TC) activity for the past 800 years from Robinson Lake, located on the north Atlantic seaboard of Nova Scotia, Canada. Two sediment cores were extracted from Robinson Lake and were dated by 210Pb and 14C methods, and analyzed for organic matter content, sediment grain size, and a range of elements and elemental ratios determined by XRF core scanning. A distinct sand layer in the most recent sediments is attributed to Hurricane Juan, which struck the coast of Nova Scotia on September 29, 2003. Our study shows that peaks in grain size farther down-core are generally correlated with abrupt increases in Br and Br/Ti. XRF-derived Br measurements are an indicator of marine organic carbon (MOC), and the increases in Br likely reflect incursions of marine water and nutrients into the lake as a result of storm surges. The results show that the …
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