210Po and 210Pb distribution, dissolved-particulate exchange rates, and particulate export along the North Atlantic US GEOTRACES GA03 section
نویسندگان
چکیده
منابع مشابه
Intercalibration studies of 210Po and 210Pb in dissolved and particulate seawater samples
Documented is an intercalibration (IC) exercise for both 210Po and 210Pb in seawater aliquots distributed between up to eight international laboratories that followed individual protocols. Dissolved and particulate samples were provided by GEOTRACES during two IC cruises at baseline stations in the North Atlantic and North Pacific oceans. Included were surface and/or deep dissolved and particul...
متن کاملEffects of flow rates and composition of the filter, and decay/ingrowth correction factors involved with the determination of in situ particulate 210Po and 210Pb in seawater
Accurate measurements of particulate 210Po (Pop) and 210Pb (Pbp) are required in the investigation of (i) partitioning of Po and Pb between particulate and dissolved phases and (ii) export estimates of carbon and other key trace metals from the euphotic zone via sinking particulate matter. Based on the intercomparison of different composition of the filter material (QMA, Supor, Millipore, and P...
متن کاملTransport and diagenesis of dissolved and particulate terrigenous organic matter in the North Pacific Ocean
Lignin measurements were made on suspended particulate organic matter (POM), total dissolved organic matter (DOM), high-molecular-weight (HMW) DOM, and low-molecular-weight (LMW) DOM in the North Pacific at Station Aloha. Carbon-normalized yields of lignin and dC measurements indicate that while terrigenous organic matter accounts only for B1% of DOM in seawater, submicron POM has a substantial...
متن کاملDissolved and particulate primary production along a longitudinal gradient in the Mediterranean Sea
We have determined the photosynthetic production of dissolved (DOCp) and particulate organic carbon (POCp) along a longitudinal transect in the Mediterranean Sea during the summer stratification period. The euphotic layer-integrated rates of DOCp and POCp ranged between approximately 50–130 and 95–210 mgC m−2 d−1, respectively, and showed an east to west increasing trend. For the whole transect...
متن کاملUpper ocean export of particulate organic carbon and biogenic silica in the Southern Ocean along 1701W
Upper-ocean fluxes of particulate organic carbon (POC) and biogenic silica (bSi) are calculated from four US JGOFS cruises along 1701W using a thorium-234 based approach. Both POC and bSi fluxes exhibit large variability vs. latitude during the seasonal progression of diatom dominated blooms. POC fluxes at 100m of up to 50mmolCm 2 d 1 are found late in the bloom, and farthest south near the Ros...
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ژورنال
عنوان ژورنال: Deep Sea Research Part II: Topical Studies in Oceanography
سال: 2015
ISSN: 0967-0645
DOI: 10.1016/j.dsr2.2014.11.003