noaa-ocean-19563 Master Shell Growth Chronology from the Gulf of Maine 1762-2013 AD Wanamaker, A.D.; Kreutz, K.J.; Introne, D.S. Master Shell Growth Chronology from the Gulf of Maine 1762-2013 AD 2015-12-10 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/19563 Investigator A.D. Wanamaker Investigator K.J. Kreutz Investigator D.S. Introne earth science paleoclimate paleoceanography growth rate,bivalve,null,standard deviation unit,null,paleoceanography,detrended,null,N,Arctica islandica earth science paleoclimate paleoceanography number of samples,null,null,count,null,paleoceanography,null,null,N,number of Arctica islandica shells in chronology by year earth science paleoclimate paleoceanography age,null,null,year Common Era,null,paleoceanography,null,null,N,null earth science paleoclimate paleocean physical properties earth science paleoclimate paleocean age control geoscientificInformation 1762 AD 2013 AD 188 cal yr BP -63 cal yr BP Complete 43.714151 43.714151 -69.751652 -69.751652 -38 -38 Ocean Atlantic Ocean North Atlantic Ocean Gulf Of Maine Sequin Island>LATITUDE 43.714151>LONGITUDE -69.751652 None Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

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Boulder CO 80305-3328 USA online ASCII Wanamaker, Alan, Karl Kreutz, and Douglas Introne 2015 Unpublished Data Griffin, S.M. 2012 Thesis

STUDY NOTES: Live and dead Arctica islandica shells were collected in 2010, 2011, 2012 and 2014. All shell material is archived and stored at Iowa State University. A cross section of shell along the maximum growth axis was embedded in clear epoxy (Beulher Epoxicure resin and hardener) before sectioning the embedded shell along the maximum growth axis. One of the two mirrored surface shell cross sectioned blocks was used for crossdating chronology work while the other was saved for later geochemical analysis. To obtain the clearest view of the growth increments, the cross sectioned shell surface was polished with five silicon carbide grinding paper levels (120, 400, 600, 800, 1200). Photographs of acetate peels and measurements of shell increments were completed at Iowa State University using a uEye camera and Buelher’s OmniMet v9.5. Prior to measuring the thickness of annual increments, individual shell increments were visually inspected and temporally aligned using several visual crossdating techniques (marker years, modified list method, and skeleton plots). Visual crossdating was statistically verified using SHELLCORR and COFECHA. If either program flagged a potential problem, the increments in question were visually inspected. Measurement series were only changed if an error from measuring or visual crossdating was clearly visible upon reinspection. Applying these techniques of crossdating sclerochronological archives resulted in precisely dated and a highly replicated master shell chronology (average expressed population signal = 0.94; series intercorrelation =0.76) from a site within the central Gulf of Maine (northwestern Atlantic Ocean). Arctica islandica growth-increment chronologies were developed with program ARSTAN: http://www.ldeo.columbia.edu/res/fac/trl/public/publicSoftware.html and detrended using appropriate standardization for each data set Authors (Exactly as written in the publication citation) (cubic splines, negative exponential, or linear regression with negative or 0 slope). The "standard" chronology from ARSTAN is reported.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/wanamaker2015/wanamaker2015.txt Formatted Text File; Shell Growth Data USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11