scholarly journals Evolution of the oceanic 13 C Suess effect in the Southeastern Indian Ocean between 1994 and 2018

2021 ◽  
Author(s):  
Thomas J. Williams ◽  
Amy J. Wagner ◽  
Elisabeth L. Sikes ◽  
Ellen E. Martin
Keyword(s):  
Indian Ocean ◽  
Suess Effect

scholarly journals Pre-Bomb Radiocarbon Variability Inferred from a Kenyan Coral Record

Radiocarbon ◽  
2002 ◽  
Vol 44 (2) ◽  
pp. 581-590 ◽  
Author(s):  
Nancy S Grumet ◽  
Thomas P Guilderson ◽  
Robert B Dunbar
Keyword(s):  
Indian Ocean ◽  
Coastal Upwelling ◽  
Western Indian Ocean ◽  
Suess Effect ◽  
Bomb Radiocarbon

We report results from AMS radiocarbon measurements (δ14C) in corals recovered off the coast of Kenya. Bimonthly samples which span the pre-bomb era average −51 (±3.7; n=43), when age and Suess effect are corrected, and over the time of interest (1946–1954) do not exhibit any discernible seasonality. Relative to regional pre-bomb δ14C values in the western Indian Ocean, our results indicate 14C enrichment off the coast of Kenya. Furthermore, the absence of a distinct subannual δ14C signal suggests that open and coastal upwelling is negligible off the coast of Kenya. Unlike pre-bomb values south of the equator near Seychelles and Madagascar, our pre-bomb value are enriched by more than 10. The enrichment of pre-bomb Kenyan δ14C values relative to sites around Mauritius, northern Madagascar and Seychelles, suggest that the influence of depleted δ14C water transported in the SEC is limited to regions south of 3 to 4°S.

Isotopic niches of the blue shark Prionace glauca and the silky shark Carcharhinus falciformis in the southwestern Indian Ocean

2012 ◽  
Vol 17 (1) ◽  
pp. 83-92 ◽  
Author(s):  
N Rabehagasoa ◽  
A Lorrain ◽  
P Bach ◽  
M Potier ◽  
S Jaquemet ◽  
...  
Keyword(s):  
Indian Ocean ◽  
Blue Shark ◽  
Prionace Glauca ◽  
Silky Shark ◽  
Carcharhinus Falciformis ◽  
Southwestern Indian Ocean
Sign in / Sign up

Export Citation Format

Share Document