Fig. 1: Locations of compiled groundwater and seawater samples along China’s ~ 18,000 km coastline.
From: Large scale submarine groundwater discharge dominates nutrient inputs to China’s coast
a All sampling sites. Solid triangles and circles represent nutrients and isotopic measurements in groundwater, respectively. Open circles represent Ra or Rn sample sites in seawaters. The sampling sites for dissolved inorganic nitrogen (DIN), dissolved inorganic phosphorus (DIP), dissolved inorganic silicate (DSi), 222Rn, 224Ra, 226Ra, and 228Ra are denoted by red, orange, yellow, green, cyan, blue, and purple colors, respectively. b The frequency of different types of samples with latitude. Source data are provided as a Source Data file in Supplementary Data 1. The map of panel a is generated with Ocean Data View (https://odv.awi.de).
