Law_methane dispersal

This repository contains the temperature, salinity, dissolved oxygen, dissolved methane and bottom current measurements presented in the publication ‘Dispersion and fate of methane emissions from cold seeps on Hikurangi Margin, New Zealand” submitted to Frontiers in Marine Science. The data were obtained from CTD casts collected at three methane seeps along the Hikurangi margin as well as a mooring outfitted with an ADCP and a MicroCat depolyed at ~15m above the seafloor at one of the seeps. Additionally, the Regional Ocean Modelling System (ROMS) was used to simulate the advection of passive tracers (a proxy for methane) released at five seeps located along the southern Hikurangi margin over a period of one year. The animations from the ROMS model output shows the lateral transport and dispersal of dissolved methane plumes along the Hikurangi Margin, east of New Zealand. The model domain spans the continental shelf of the eastern North Island of New Zealand at a resolution of 2 km. Passive tracers were released 150-200 m above the seafloor (bottom three grid cells) at each of the five seep sites.