Akvaplan-niva, Fram - High North Centre for Climate and the Environment, Tromsø, Norway; SALT Lofoten AS, Postboks 91, 8301 Svolvær, Norway.
Ecotone AS, Pirsenteret, Havnegata 9, Blokk D - 3.etg., 7010 Trondheim, Norway.
Mar Pollut Bull. 2019 Aug;145:67-80. doi: 10.1016/j.marpolbul.2019.04.031. Epub 2019 May 20.
We surveyed the deposition of drill cuttings on the seafloor along a transect at eight drilling locations in the south-western Barents Sea and Norwegian Sea, comparing traditional visual surveying methods and underwater hyperspectral imagery (UHI). The locations range from newly-drilled to around 30 years post-drilling. The visual assessments detected deposited drill cuttings to extend to around 150-200 m from the drilling location at recently drilled sites and generally less than 50 m at older locations. Quantitative UHI analyses of relative change in the spectral signature of the sediments with increasing distance from the drilling location mostly showed a change-over to conditions resembling undisturbed sediments at approximately similar distances as the visual assessments. Biological faunal community analyses also reflected these trends. The UHI-based detection of drill cuttings thus in general supported the results of visual assessments and potentially could be further developed as a method for automated surveying of drilling sites.
我们调查了西南巴伦支海和挪威海八个钻井位置沿线海底钻屑的沉积情况，比较了传统的目视调查方法和水下高光谱图像（UHI）。这些地点的范围从新钻井到钻井后约 30 年。目视评估发现，在最近钻井的地点，沉积的钻屑延伸到离钻井位置约 150-200 米处，而在较旧的地点则通常小于 50 米。随着与钻井位置的距离增加，沉积物光谱特征的相对变化的定量 UHI 分析显示，在类似于未受干扰沉积物的条件下发生了转变，其距离与目视评估大致相似。生物动物群分析也反映了这些趋势。因此，基于 UHI 的钻屑检测通常支持目视评估的结果，并有可能进一步开发为钻井场地自动调查的方法。
