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Flux of nutrients between the middle and southern Adriatic Sea (Gargano-Split section)

机译：亚得里亚海中部和南部之间的养分通量（加尔加诺分裂段）

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摘要

The transect Gargano-Split at the borderline between the middle and southern Adriatic on the Palagruza Sill is exposed to the influences both from the northern and southern Adriatic and is a main transition point for the Adriatic. Thus, water and dissolved inorganic nutrients fluxes between the northern shelf area and the southern deep sea can be estimated at this point. During the Dynamic of the Adriatic in Real Time (DART) project, 12 bottom-mounted Acoustic Doppler Current Profilers (ADCPs) were deployed from November 2005 to September 2006 along the Gargano-Split section. During the same period four different oceanograph-ic cruises were carried out (in November 2005, March, April and July 2006). Hydrographic stations were sampled with the CTD/Rosette to measure physical (temperature, salinity and density) and chemical (oxygen, orthosilicate, orthophosphate and nitrite+nitrate) parameters. Measurements of current velocities allowed estimation of water fluxes and the net nutrient transports were estimated from these and nutrient concentrations. The orthosilicate flux across the transect for inflow and for outflow was higher (except for March) than the nitrite + nitrate and the orthophosphate fluxes. The outflowing nutrient fluxes in the Western Adriatic Current (WAC) were much lower than the total nutrient flux outflow as a large portion of the nutrient flux towards the southern Adriatic was carried by other outflowing waters including North Adriatic Dense Water (NAdDW) flowing along the Italian bottom slope and Middle Adriatic Dense Water (MAdDW) flowing through the deepest passage in the center of the Sill. The July survey provided the first opportunity for direct measurements of total nutrient fluxes across a full basin transect of the central Adriatic. The measurements suggest that the nutrient import and nutrient export were roughly in balance. Modified Levantine Intermediate Water (MLIW) significantly contributed to a total nutrient influx across the transect that was strong enough to counter-balance the nutrient export by the WAC, NAdDW, MAdDW, and other sources.
机译：位于Palagruza Sill中亚得里亚海南部和南部交界处的Gargano-Split断面暴露于亚得里亚海北部和南部的影响，是亚得里亚海的主要过渡点。因此，此时可以估算出北部陆架区和南部深海之间的水和溶解的无机养分通量。在“实时动态亚德里亚（DART）”项目期间，从2005年11月至2006年9月，在Gargano-Split区域部署了12个底部安装的声学多普勒电流剖面仪（ADCP）。在同一时期，进行了四次不同的海洋学巡游（2005年11月，2006年3月，4月和2006年7月）。用CTD / Rosette对水文站采样，以测量物理（温度，盐度和密度）和化学（氧气，正硅酸盐，正磷酸盐和亚硝酸盐+硝酸盐）参数。通过测量当前流速，可以估算出水通量，并根据这些通量和养分浓度估算养分净输送量。穿过样带的流入和流出的原硅酸盐通量高于亚硝酸盐+硝酸盐和正磷酸盐通量（三月份除外）。西亚得里亚海流（WAC）的营养通量流出量远低于总养分通量流出量，因为大部分营养素通向亚得里亚海南部的通量是由其他流出水带走的，包括北亚得里亚海致密水（NAdDW）沿水流流动。意大利底坡和中亚得里亚海密水（MAdDW）流经西尔中心最深的通道。 7月的调查为直接测量整个亚得里亚海中部整个盆地样带的总养分通量提供了首次机会。测量结果表明，养分进口和养分出口大致处于平衡状态。改良的黎万丁中间水（MLIW）极大地促进了整个横断面的总养分流入，其强度足以抵消WAC，NAdDW，MAdDW和其他来源的养分出口。

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  • 来源
    《Marine Chemistry》 |2013年第20期|1-14|共14页
  • 作者

    Federica Grilli; Mauro Marini; Jeffrey W. Book; Alessandra Campanelli; Elio Paschini; Aniello Russo;

  • 作者单位

    Institute of Marine Sciences, National Research Council (CNR), Largo Hera delta Pesca, 2,IT-60125 Ancona, Italy;

    Institute of Marine Sciences, National Research Council (CNR), Largo Hera delta Pesca, 2,IT-60125 Ancona, Italy;

    Ocean Sciences Branch, Naval Research Laboratory, Stennis Space Center, 39529 MS, USA;

    Institute of Marine Sciences, National Research Council (CNR), Largo Hera delta Pesca, 2,IT-60125 Ancona, Italy;

    Institute of Marine Sciences, National Research Council (CNR), Largo Hera delta Pesca, 2,IT-60125 Ancona, Italy;

    Institute of Marine Sciences, National Research Council (CNR), Largo Hera delta Pesca, 2,IT-60125 Ancona, Italy,Dipartimento di Scienze delta Vita e dell'Ambiente, Universita Politecnica delle Marche, Via Brecce Blanche 60131, Ancona, Italy;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Current fields; Nutrient fluxes; Adriatic Sea; Water masses;

    机译：当前领域;营养通量;亚得里亚海;水团;

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