skip to main content
US FlagAn official website of the United States government
dot gov icon
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
https lock icon
Secure .gov websites use HTTPS
A lock ( lock ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

Explore Research Products in the PAR
It may take a few hours for recently added research products to appear in PAR search results.


  • NSF Public Access
  • Search Results
  • High-precision Al–Mg isotopic systematics in USNM 3898 – The benchmark “ALL” for initial 87 Sr/ 86 Sr in the earliest Solar System
Title: High-precision Al–Mg isotopic systematics in USNM 3898 – The benchmark “ALL” for initial 87 Sr/ 86 Sr in the earliest Solar System
Award ID(s):
1658823
PAR ID:
10085149
Author(s) / Creator(s):
; ;
Date Published:
Journal Name:
Earth and Planetary Science Letters
Volume:
491
Issue:
C
ISSN:
0012-821X
Page Range / eLocation ID:
238 to 243
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
More Like this
  1. ; (, AGU Fall Meeting)
  2. ; ; ; ; ; (, Paleoceanography and Paleoclimatology)
    Abstract Coral Sr/Ca records have been widely used to reconstruct and understand past sea surface temperature (SST) variability in the tropical Pacific. However, in the eastern equatorial Pacific, coral growth conditions are marginal, and strong El Niño events have led to high mortality, limiting opportunities for coral Sr/Ca‐based SST reconstructions. In this study, we present two ∼25‐year Sr/Ca and Mg/Ca records measured on modernPorites lobatafrom Wolf and Darwin Islands in the northern Galápagos. In these records, we confirm the well‐established relationship between Sr/Ca and SST and investigate the impact of heat stress on this relationship. We demonstrate a weakened relationship between Sr/Ca and SST after a major (Degree Heating Months 9°C‐months) heat stress event during the 1997–1998 El Niño, with a larger response in the Wolf core. However, removing data that covers the 1997–1998 El Niño from calibration does not improve reconstruction statistics. Nevertheless, we find that excluding dataafterthe 1997–1998 El Niño event from the calibration reduces the SST reconstruction error slightly. These results confirm that coral Sr/Ca is a reliable SST proxy in this region, although it can respond adversely to unusual heat stress. We suggest that noise in Sr/Ca‐SST calibrations may be reduced by removing data immediately following large heat extremes. 
    more » « less
  3. ; ; ; ; (, Geochimica et Cosmochimica Acta)
  4. ; ; ; ; ; (, New Journal of Physics)
  5. ; ; ; ; ; ; ; ; ; ; et al (, Nature)
  • Citation Formats
  • MLA
  • APA
  • Chicago
  • BibTeX
  • Save / Share this Record
  • Send to Email