Abstract. High-resolution bathymetry provides critical information to marine geoscientists. Bathymetric big data help characterise the seafloor and its benthic habitats, understand sedimentary records, and support the development of offshore engineering infrastructures. From September 27^th to October 20^th, 2022, the new CNR Research Vessel GAIA BLU explored the seafloor of the Naples and Pozzuoli Gulfs, and the Amalfi coastal area (Tyrrhenian Sea, Italy) from 50 to more than 2000 m water depth, acquiring about 5000 km² of multi beam echosounder data. This area is particularly vulnerable to abrupt changes driven by the dynamics of several volcanic complexes, active in the area, and by human-induced impacts reflecting the proximity to the highly populated and touristic coastal area of Naples and nearby famous islands. For these reasons, the seafloor of the area needs to be known and constantly monitored. The digital bathymetric data previously available are restricted to the shallow highly dynamic area of the Gulf of Naples and appear fragmented as they were acquired in successive years, with different goals thereby using a variety of devices, with markedly different spatial resolutions. In this paper, we present bathymetric maps of the Gulf of Naples and adjacent slope basins at unprecedented resolution using three state-of-the-art multi beam echosounders. These high-resolution data highlight the technological advances of geophysical surveys achieved over the last 20 years and contribute to assessing the most dynamic areas where changes in the seafloor over time can be quantified. The new digital multi-resolution bathymetric products are openly accessible via Marine Geosciences Data System MGDS (refer to section Data Availability, Table 8, for datasets and products DOIs), perfectly matching the FAIR (Findable, Accessible, Interoperable and Reusable) and Open Science Principles.

中文翻译：

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来自互补多波束回声测深仪的那不勒斯湾（意大利）的新多分辨率测深数据集


摘要。高分辨率测深为海洋地球科学家提供了重要信息。测深大数据有助于描述海底及其海底栖息地的特征、了解沉积记录并支持海洋工程基础设施的发展。 2022年9月27日 ^th 至10月20日 ^th ，CNR新研究船GAIA BLU探索了那不勒斯湾和波佐利湾的海底以及阿马尔菲沿海地区（意大利第勒尼安海） ）从50米到2000米以上水深，采集约5000公里 ² 多波束测深数据。该地区特别容易受到该地区活跃的几个火山群的动态以及人为影响所驱动的突变的影响，这些影响反映了该地区靠近那不勒斯人口稠密和旅游沿海地区以及附近著名岛屿的影响。由于这些原因，需要了解该地区的海底情况并持续监测。以前可用的数字测深数据仅限于那不勒斯湾浅层高动态区域，并且由于连续几年获得的数据显得支离破碎，出于不同的目标，因此使用了各种空间分辨率明显不同的设备。在本文中，我们使用三个最先进的多波束回声测深仪以前所未有的分辨率绘制了那不勒斯湾和邻近斜坡盆地的测深图。这些高分辨率数据突显了过去 20 年来地球物理测量所取得的技术进步，有助于评估最具活力的区域，在这些区域中可以量化海底随时间的变化。 新的数字多分辨率测深产品可通过海洋地球科学数据系统 MGDS 公开访问（有关数据集和产品 DOI，请参阅数据可用性部分，表 8），完美匹配 FAIR（可查找、可访问、可互操作和可重复使用）和开放科学原则。