Niels Oskarsson

TL;DR: In this article, four previously known ash layers (Ash Zones I and II, Saksunarvatn and the Settlement layer) all originating in Iceland have been identified in the Central Greenland ice core GRIP.

TL;DR: It is shown that deformation associated with the 2010 Eyjafjallajökull eruptions was unusual because it did not relate to pressure changes within a single magma chamber, and clear signs of volcanic unrest signals over years to weeks may indicate reawakening of such volcanoes, whereas immediate short-term eruption precursors may be subtle and difficult to detect.

TL;DR: In this paper, a comprehensive set of Sr, Nd, and O isotope data and trace element concentrations from tholeiitic and alkaline lavas of the neovolcanic zones of Iceland (picrites, olivine and quartz tholesiites, transitional and alkali basalts, differentiated rocks) are presented.

TL;DR: In this article, the authors attributed long-term climate moderation to chemical weathering; the higher the temperature and precipitation, the faster the weathering rate, and the more divalent cations were released to the environment.

TL;DR: The 1783-1784 Laki tholeiitic basalt fissure eruption in Iceland was one of the greatest atmospheric pollution events of the past 250 years, with widespread effects in the northern hemisphere.