Oceanographic parameters for the sample stations of Ludwig Prandtl cruise LP20200629

Offshore wind energy is a steadily growing sector contributing to the worldwide energy production. The impact of these offshore constructions on the marine environment, however, remains unclear in many aspects. In fact, little is known about potential emissions from corrosion protection systems such as organic coatings or galvanic anodes composed of Al and Zn alloys, used to protect offshore structures. In order to assess potential chemical emissions from offshore wind farms and their impact on the marine environment water and sediment samples were taken in and around offshore wind farms of the German Bight between 22.07.2020 and 25.07.2020 within the context of the Hereon-BSH project OffChEm. At every sampling station oceanographic parameters were measured directly on board with respective probes of a multimeter for pH, dissolved oxygen, temperature and conductivity. Additionally the current associated weather conditions (temperature in air, wind speed, air pressure) were noted from the ship system.

海上风能是全球能源生产中持续增长的领域。然而，这些海上工程对海洋环境的影响在诸多方面仍不明确。事实上，对于用于保护海上结构的防腐系统（corrosion protection systems）——如有机涂层或由铝锌合金构成的牺牲阳极（galvanic anodes）——的潜在排放，人们知之甚少。为评估海上风电场的潜在化学排放及其对海洋环境的影响，研究人员于2020年7月22日至25日期间，在Hereon-BSH项目OffChEm的框架下，在德国湾的海上风电场内部及周边采集了水样和沉积物样本。在每个采样站，研究人员使用多参数仪（multimeter）的相应探头在船上直接测量了海洋学参数（oceanographic parameters），包括pH值、溶解氧、温度和电导率。此外，还通过船舶系统记录了当时的相关天气条件（气温、风速、气压）。