Essays about: "ice-cores"

Showing result 1 - 5 of 13 essays containing the word ice-cores.

1. 1. Microstructures and Compressive Strength of Lake Ice in Sweden A structural Documentation and Compressive Strength Analysis of Lake Ice Cores from Uppsala, using the SonReb Method

   University essay from Göteborgs universitet/Institutionen för geovetenskaper

   Author : Julia Ladefoged; [2023-08-18]
   Keywords : ;

   Abstract : Lake ice have been utilized by humans through centuries, as transportation routes and recreational activities to name a few (Sharma et al., 2019). Despite our frequent usage of lake ice there is a lack of extensive knowledge of it. READ MORE

3. 2. Methane Sulphonic Acid in East Antarctic Coastal Firn and Ice Cores and Its Relationship with Chlorophyll-a and Sea Ice Extent in the Southern Ocean

   University essay from Uppsala universitet/Institutionen för geovetenskaper

   Author : Emma Nilsson; [2022]
   Keywords : methane sulphonic acid; firn cores; sea ice proxy; marine primary productivity; Fimbul Ice Shelf; Dronning Maud Land; metansulfonsyra; firnkärnor; havsis-proxy; marin primärproduktion; Fimbulisen; Dronning Maud Land;

   Abstract : The seasonal retreat of sea ice in the austral spring and summer around Antarctica has a significant effect on phytoplankton activity, mainly due to light availability, meltwater input of dissolved iron, and surface water stratification. Phytoplankton produce dimethylsulfoniopropionate, the precursor to the climate-cooling gas dimethyl sulphide, which is ventilated to the atmosphere and oxidised to methane sulphonic acid (MSA). READ MORE

4. 3. Drilling for time: ice cores and the synchronization of temporalities in glaciology, 1935-1978

   University essay from Lunds universitet/Avdelningen för idé- och lärdomshistoria

   Author : Erik Isberg; [2018]
   Keywords : ice cores; Arctic science; temporalities; Environmental humanities; climate modelling; history of science; Willi Dansgaard; Anthropocene; synchronization; temporal regimes; Cultural Sciences;

   Abstract : Since their emergence in the 1950’s, ice cores have ventured from being scientific objects of concern to a limited number of glaciologists to becoming one of the most iconic representations of anthropogenic climate change. This thesis aims to historicize the way in which ice cores became enrolled into climate discourse, particularly emphasizing the production and representation of temporalities of the global climate that the ice cores made possible. READ MORE

5. 4. Multiradionuclide evidence for an extreme solar proton event around 2610 BP

   University essay from Lunds universitet/Geologiska institutionen

   Author : Martin Paschal Ohare; [2017]
   Keywords : cosmic-rays; cosmogenic radionuclides; NGRIP; GRIP; solar proton event; SPE; Earth and Environmental Sciences;

   Abstract : Recently it has been confirmed that extreme solar proton events (SPE) can lead to significantly increased production of cosmogenic radionuclides (Mekhaldi et al. 2015). The evidence of these events can be recorded in tree rings (14C) and ice cores (10Be, 36Cl). READ MORE

6. 5. The dynamics of Beryllium 10 transport and deposition in lake sediments

   University essay from Lunds universitet/Geologiska institutionen

   Author : Oskar Henriksson; [2016]
   Keywords : solar activity; Beryllium-10; lake sediment; 10Be; solar cycle; Earth and Environmental Sciences;

   Abstract : Lake sediments have lately been explored as a 10Be archive, complementing previous research on ice cores and marine sediments. 10Be is an important proxy as it can be used to study past solar activity, a factor which affects the climate. READ MORE