ABSTRACT We adopted a combined geophysical-stratigraphic approach to identify grain size anomalies in sediment distribution of the Bagnoli coastal brownfield site. A large industrial plant occupied this area during most of the 20th Century. We used 18 core logs to identify macroscopic variation in sediment stratigraphy, and 72 supplemental cores to mark changes between sandy- and silt-dominated intervals. The stratigraphy evidenced the presence of anomalous lens of silt within a sandy coastal sector inside the Bagnoli industrial harbour. Cores description helped us to calibrate the interpretation of 4 subbottom profiles, that we used to obtain information on geometries of silty deposits. The spatial layout of sediments revealed that silt intervals are present in the area bounded by the old industrial wharfs. We suggest that these silty sediments are likely the result of uncontrolled discharge occurred during the last century. Once calibrated, high-resolution mono-channel seismic profiles helped us to define the shape as well as the real extent and thicknesses of silty deposits, resulted to be ca. 515.000 m2, with an overall volume of 480.000 m3. These results are a first attempt to define the amount of polluted sediments in the area facing the Bagnoli industrial harbour.

中文翻译：

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波佐利湾（意大利）Bagnoli 棕地遗址的浅海沉积物特征

摘要 我们采用地球物理地层学相结合的方法来识别 Bagnoli 沿海棕地场地沉积物分布的粒度异常。在 20 世纪的大部分时间里，一个大型工业厂房占据了这个地区。我们使用 18 个岩心测井来识别沉积地层的宏观变化，并使用 72 个补充岩心来标记砂质和粉砂主导层段之间的变化。地层证明了在巴尼奥利工业港内的沙质沿海地区存在异常的淤泥透镜。岩心描述帮助我们校准了 4 个底部剖面的解释，我们用来获取有关粉质沉积物几何形状的信息。沉积物的空间布局显示，在旧工业码头边界的区域存在淤泥层。我们认为这些粉质沉积物很可能是上个世纪发生的不受控制的排放的结果。校准后，高分辨率单通道地震剖面帮助我们定义粉质沉积物的形状以及实际范围和厚度，结果大约为 515.000 m2，总容积为 480.000 m3。这些结果是首次尝试确定面向 Bagnoli 工业港的区域的污染沉积物数量。