Dataset of Sediment Flux with the Loss on Ignition (LOI) obtained from water samples from two different locations in Revvatnet lake in Hornsund region (Spitsbergen, Svalbard). From 2022 onward, the Sediment Flux is measured 3 m above the bottom with one deployment lasting approximately two weeks. The water samples (1l) were filtered through Whatman GF/F 0.7 μm filters that had been previously dried for 2 h at 200°C and weighed. If the sediment concentration was high, only part of the water sample was filtered. After filtering, the filters were rinsed with fresh water and they were dried for 24 h at 40°C and weighed again to get the dry sediment weight. Finally, all filters were kept in a 550°C oven for 3 h to calculate the fraction of organic material (LOI, loss on ignition).
The Sediment Flux dataset consists of one txt-file with the following columns: Station name, Deployment date, Recovery date, Latitude, Longitude, Bottom depth (m), Sampling depth (m), Sediment accumulation rate (g/m**2/day) and Loss on Ignition (LOI, %). The dates are formatted as YYYY-MM-DD and the coordinates are expressed as decimal degrees. The data are stored as tab-delimited ASCII files with one headerline (column names).