Sökning: "NGRIP"

Hittade 3 uppsatser innehållade ordet NGRIP.

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

   Master-uppsats, Lunds universitet/Geologiska institutionen

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

   Sammanfattning : 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). LÄS MER

3. 2. The cosmic-ray events around AD 775 and AD 993 : assessing their causes and possible effects on climate

   Master-uppsats, Lunds universitet/Geologiska institutionen

   Författare :Florian Mekhaldi; [2014]
   Nyckelord :cosmic-rays; cosmogenic radionuclides; GICC05; NGRIP; solar proton event; storminess; Earth and Environmental Sciences;

   Sammanfattning : Miyake et al. (2012, 2013) discovered rapid increases of 14C content in tree rings dated to AD 774-5 and AD 992-3 which were attributed to unprecedented cosmic-ray events. These extreme particle events have no counterparts in the instrumental and historical record and consequently praised great interest. LÄS MER

4. 3. A Greenland ice core perspective on the dating of the Late Bronze Age Santorini eruption

   Master-uppsats, Lunds universitet/Geologiska institutionen

   Författare :Elin Löfroth; [2010]
   Nyckelord :Santorini; 10Be; 14C; NGRIP; kolcykelmodellering; carbon cycle modeling; Earth and Environmental Sciences;

   Sammanfattning : The Santorini eruption is one of the greatest in historic time and an important time marker in the regional archaeology. It has been dated to 1627-1600 BC (2σ error) using radiocarbon dating (Friedrich et al. 2006) and to 1642±5 BC by identifying a volcanic fallout layer in the Greenland ice cores (Vinther et al. 2006). LÄS MER