The surface connection between the Ionian Sea (central Mediterranean Sea) and the surrounding areas is studied by looking at the statistical properties of 1632 near-surface Lagrangian trajectories. The choice of the area is due to the key role in the dynamics of the Mediterranean Sea and to the geographical distribution of data. The Lagrangian drifter data were taken from the OGS Mediterranean drifter database, which gathers drifter data collected in the Mediterranean Sea from various institutions and countries between 1986 and 2016. The database has proved to be sufficiently complete, but the spatial and temporal data coverage are less satisfactory in the case of selection of a specific study area and temporal range. The strategy used in this work aims to limiting the problem of data coverage by choosing many target boxes around the study area, choice based on drifter trajectories, current patterns and areas of interest. The pseudo-eulerian analysis obtained from all trajectories passing through the Ionian Sea show the main dynamic structure present in the central Mediterranean Sea (e.g. Atlantic Ionian Stream, Mid Ionian Jet, etc.).On the other hand, the data density decreases progressively toward the eastern and western sectors of the Mediterranean. The highest connection was observed with the Strait of Sicily, Eastern Ionian and Adriatic Sea, with connection percentages 30%, 25% and 16% respectively. The transit times between the Ionian Sea and these target boxes are about 20–50 days. The Ionian Sea is characterized by phenomena of inversion of the basin surface circulation, from cyclonic to anti-cyclonic, over a ten-year timescale, the so-called Adriatic-Ionian Bimodal Oscillating System (BiOS, e.g. Gačić et al., 2010; Gačić et al., 2011). An application of the “target box methodology” has been used to describe how the cyclic variability of the dynamic surface currents generates an equally cyclical fluctuation of the connectivity between the Ionian Sea and the surrounding areas during the BiOS phases.

通过研究1632近海拉格朗日轨迹的统计特性，研究了爱奥尼亚海（地中海中部）与周围地区之间的表面连接。该区域的选择是由于在地中海动态中的关键作用以及数据的地理分布。拉格朗日漂流者数据来自OGS地中海漂流者数据库，该数据库收集了1986年至2016年之间在地中海中从各个机构和国家收集的漂流者数据。该数据库已被证明是足够完整的，但时空数据覆盖范围较小在选择特定研究区域和时间范围的情况下令人满意。在这项工作中使用的策略旨在通过选择研究区域周围的许多目标框来限制数据覆盖范围的问题，根据漂移轨迹，当前模式和关注区域进行选择。从穿过爱奥尼亚海的所有轨迹获得的伪欧拉分析表明，地中海中部存在着主要的动态结构（例如大西洋爱奥尼亚河，中爱奥尼亚急流等）。另一方面，数据密度朝着逐渐减小地中海的东部和西部。西西里海峡，爱奥尼亚海东部和亚得里亚海海域之间的联系程度最高，分别为30％，25％和16％。的 另一方面，数据密度朝向地中海的东部和西部逐渐减小。西西里海峡，爱奥尼亚海东部和亚得里亚海海域之间的联系程度最高，分别为30％，25％和16％。的 另一方面，数据密度朝向地中海的东部和西部逐渐减小。西西里海峡，爱奥尼亚海东部和亚得里亚海海域之间的联系程度最高，分别为30％，25％和16％。的爱奥尼亚海与这些目标箱之间的运输时间约为20至50天。爱奥尼亚海的特征是，在十年的时间范围内，从旋风向反旋风的盆地表面循环反转现象，即所谓的亚得里亚海-爱奥尼亚双峰振荡系统（BiOS，例如Gačić等人，2010年； Gačić等，2011）。“目标箱方法”的一种应用已被用来描述动态地表电流的周期性变化如何在BiOS阶段产生爱奥尼亚海与周边地区之间连通性的同等周期性波动。