Essays about: "geochemical"
Showing result 6 - 10 of 118 essays containing the word geochemical.
-
6. Mercury accumulation in lake sediments on different time scales – the influence of algal primary production
University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskapAbstract : The aim of this work is to test the proposed approach of algal scavenging as a driver of sediment mercury (Hg) on different time scales and to gain a better understanding of the mechanisms of Hg accumulation in lake sediments. A 3000-year sediment record from Nylandssjön in northern Sweden was analysed for this purpose, as well as a 20-year sediment record from the seasonal sediment traps of this lake. READ MORE
-
7. CO2 Sequestration by Bio-Accelerated Silicate Weathering
University essay from Uppsala universitet/Institutionen för geovetenskaperAbstract : Human-caused emissions of CO2 and other greenhouse gases are an established reason for the climate changes that affect planet Earth. Negative emission technologies (NETs), for example, bio-accelerated silicate weathering bioreactors, seek to capture and store carbon from the atmosphere. READ MORE
-
8. Response of foraminifera Ammonia confertitesta (T6) to ocean acidification, warming, and deoxygenation - An experimental approach
University essay from Lunds universitet/Geologiska institutionenAbstract : Ocean acidification, warmer temperatures, and the expansion of hypoxic zones in coastal areas are direct consequences of the increase in anthropogenic activities. However, so far, the combined effects of these stressors on calcium carbonate-secreting marine microorganisms - foraminifera are complex and poorly understood. READ MORE
-
9. Effect of increased vertical stress on the state of grains in tailings
University essay from Luleå tekniska universitet/GeoteknologiAbstract : Tailings storage facilities (TSFs) serve as structures for storing tailings, i.e., waste materials generated by the mining industry. READ MORE
-
10. The geochemical status of the surface water and the sediments in the estuary of the Sangis River, Kalix, Sweden
University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurserAbstract : It has been common in forestry and agriculture to drain waterlogged areas through ditching in order to cultivate them. The ditches that drain water are usually connected to some watercourse, such as a river. READ MORE