کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6383691 | 1626347 | 2014 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Dissolved organic matter cycling in the confluence of the Atlantic and Indian oceans south of Africa
ترجمه فارسی عنوان
ماده آلی حل شده در دوچرخه سواری در اقیانوس اطلس و اقیانوس هند در جنوب آفریقا دوچرخه سواری می کند
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کلمات کلیدی
CDWICWWOCENNLSSouth Atlantic Central WaterWeddell Sea Deep WaterSACCFSubantarctic FrontNADWAAIWSTFWinter waterNPFSAFMOCOMPACCDOCCircumpolar Deep Water - آب عمیق آب زیرزمینیAntarctic intermediate water - آب متوسط قطب جنوبNorth Atlantic Deep Water - آبهای عمیق شمال آتلانتیکApparent oxygen utilization - استفاده اکسیژن ظاهریSouthern Ocean - اقیانوس جنوبیstandard deviation - انحراف معیارAOU - اوتSubtropical Front - جبهه ساتروپیکPolar Front - جبهه قطبیAntarctic circumpolar current - جریان دایره قطبی قطب جنوبDeep Western Boundary Current - جریان مرزی غربیVol - جلدVolume - جلدlon - خالهLAT - سالAgulhas Current - سوزن جاریLatitude - عرض جغرافیاییLongitude - عرض جغرافیاییDepth - عمقDissolved organic carbon - کربن آلی حل شدهDissolved organic carbon (DOC) - کربن آلی حل شده (DOC)meridional overturning circulation - گردش خون محو شدید
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
زمین شناسی
چکیده انگلیسی
The boundary between the Atlantic and Indian sectors of the Southern Ocean is a key spot of the thermohaline circulation, where the following water masses mix up: Indian Central water (ICW), South Atlantic Central Water (SACW), Antarctic Intermediate Water (AAIW), Circumpolar Deep Water (CDW), North Atlantic Deep Water (NADW), Weddell Sea Deep Water (WSDW) and Antarctic Winter Water (WW). An optimum multiparameter analysis based on the distributions of potential temperature, salinity, NO (=O2+9.3ÃNO3) and silicate during the GoodHope 2004 (GH04) cruise allowed us to (i) define the realms of these water masses; (ii) obtain the water mass proportion weighted-average (archetypal) apparent oxygen utilization (AOU) and dissolved organic carbon (DOC) concentrations of each water mass; and (iii) estimate the contribution of DOC to the oxygen demand of the study area. WW represented only 5.2% of the water volume sampled during GH04, followed by WSDW with 10.8%, NADW with 12.7%, SACW with 15.3%, AAIW with 23.1% and CDW with 32.8%. The distributions of DOC and AOU were mainly explained by the mixing of archetypal concentrations of these variables, 75±5% and 65±3% respectively, which retained the variability due to the basin-scale mineralization from the formation area to the barycentre of each water mass along the GH04 line. DOC accounted for 26±2% and 12±5% of the oxygen demand of the meso- and bathypelagic ocean, respectively. Conversely, local mineralization processes, retained by the residuals of the archetypal concentrations of DOC and AOU, did not contribute to improve significantly the mixing model of DOC.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Deep Sea Research Part I: Oceanographic Research Papers - Volume 83, January 2014, Pages 12-23
Journal: Deep Sea Research Part I: Oceanographic Research Papers - Volume 83, January 2014, Pages 12-23
نویسندگان
E. Guerrero-Feijóo, M. Nieto-Cid, M. Álvarez, X.A. Álvarez-Salgado,