A synthetic map of the northwest European Shelf sedimentary environment for applications in marine science
A synthetic map of the northwest European Shelf sedimentary environment for applications in marine science
复制标题
用于海洋科学应用的欧洲西北部陆架沉积环境综合图
DOI：
10.5194/essd-10-109-2018
复制
发表时间：
2017
影响因子：
11.4
通讯作者：
M. Heath
中科院分区：
文献类型：
--
作者：
R. Wilson;D. Speirs;A. Sabatino;M. Heath
抽象的。海底沉积物测绘对一系列海洋政策很重要，
规划和科学问题，已经有相当多的国家和
国际投资在世界各地的整理和综合
沉积物数据集。然而，至少在欧洲，这方面的努力大部分是
旨在对离散生境进行海底分类和绘图。
科学用户往往不得不求助于逆向工程这些
分类以恢复连续变量，例如泥浆含量和
中值粒度，这是许多生态和生物物理所需的
问题研究在这里，我们提出了一套新的0.125英寸× 0.125英寸分辨率
西北欧沉积岩连续特性综合图
环境，从比斯开湾延伸到北方界限，
北海和法罗群岛。这些地图混合了网格化的调查数据，
基于床面剪应力分布的统计模拟值
由于潮汐流和波浪以及水深特性。最近的工作已经
显示统计模型可以预测英国的沉积物组成，
沃茨和北海的高精度，在这里，我们扩展到
整个大陆架以及其他关键海底参数的测绘。地图
包括泥浆、沙子和砾石百分比组成;孔隙度，
渗透性;整个沉积物和砂的中值粒度，
砾石组分;沉积物碳氮含量;
岩石覆盖的海底区域;平均和最大深度平均潮汐速度
和海底波浪轨道速度;以及月平均自然扰动
rates.这些地图有许多应用，包括物种
分布模型和更准确地表示海底
生态系统模式中的地球化学有关数据产品可于
https://doi.org/10.15129/1e27b806-1eae-494d-83b5-a5f4792c46fc的网站。
Abstract. Seabed sediment mapping is important for a wide range of marine policy,
planning and scientific issues, and there has been considerable national and
international investment around the world in the collation and synthesis of
sediment datasets. However, in Europe at least, much of this effort has been
directed towards seabed classification and mapping of discrete habitats.
Scientific users often have to resort to reverse engineering these
classifications to recover continuous variables, such as mud content and
median grain size, that are required for many ecological and biophysical
studies. Here we present a new set of 0.125 ∘ by 0.125 ∘ resolution
synthetic maps of continuous properties of the north-west European sedimentary
environment, extending from the Bay of Biscay to the northern limits of the
North Sea and the Faroe Islands. The maps are a blend of gridded survey data,
statistically modelled values based on distributions of bed shear stress
due to tidal currents and waves, and bathymetric properties. Recent work has
shown that statistical models can predict sediment composition in British
waters and the North Sea with high accuracy, and here we extend this to the
entire shelf and to the mapping of other key seabed parameters. The maps
include percentage compositions of mud, sand and gravel; porosity and
permeability; median grain size of the whole sediment and of the sand and the
gravel fractions; carbon and nitrogen content of sediments; percentage of
seabed area covered by rock; mean and maximum depth-averaged tidal velocity
and wave orbital velocity at the seabed; and mean monthly natural disturbance
rates. A number of applications for these maps exist, including species
distribution modelling and the more accurate representation of sea-floor
biogeochemistry in ecosystem models. The data products are available from
https://doi.org/10.15129/1e27b806-1eae-494d-83b5-a5f4792c46fc .