Search for dissertations about: "mid-holocene"

Showing result 1 - 5 of 20 swedish dissertations containing the word mid-holocene.

2. 1. Modelling the early to mid-Holocene Arctic climate

   Author : Marit Berger; Arne Johansson; Rodrigo Caballero; KTH; []
   Keywords : Arctic; early Holocene; mid-Holocene; climate modelling; paleoclimate; sea ice; climate change;

   Abstract : In the recent past it has become evident that the Earth's climate is changing, and that human activity play a significant role in these changes. One of the regions where the ongoing climate change has been most evident is in the Arctic: the surface temperature has increased twice as much in this region as compared to the global average, in addition, a significant decline in the Arctic sea-ice extent has been observed in the past decades. READ MORE

4. 2. Archaeological and Historical Reconstructions of the Foraging and Farming Communities of the Lower Zambezi : From the mid Holocene to the second Millennium AD

   Author : Hilário Madiquida; Paul Sinclair; Karl-Johan Lindholm; Dr Munyaradzi Manyanga; Uppsala universitet; []
   Keywords : HUMANIORA; HUMANITIES; Mozambique; Zambezi Valley; Late Stone Age; Early Farming Communities; Long-distance trade; Afro-Portuguese; Written sources; Archaeology; Historical Ecology; Archaeology; Arkeologi;

   Abstract : In this thesis I combine new archaeological surveys and excavations together with the historical and ethnographic sources, to construct a long term settlement history and historical ecology of the lower Zambezi River valley and delta region, in Mozambique. The evidence presented indicates that people have settled in the area since the Late Stone Age, in total eight new archaeological sites have been located in archaeological surveys. READ MORE

5. 3. Speleothems from Warm Climates : Holocene Records from the Caribbean and Mediterranean Regions

   Author : Meighan Boyd; Karin Holmgren; Ian J. Fairchild; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Stable isotopes; U-Th dating; trace elements; stalagmite; speleothem; Mid-Holocene; Caribbean; ITCZ; rapid climate change; climate; Eastern Mediterranean; Peloponnese; Santorini; Neolithic; Alepotrypa Cave; Physical Geography; naturgeografi;

   Abstract : This thesis contributes to increased knowledge on Holocene climate and environmental variability from two complex and sparsely studied areas. Using a speleothem from Gasparee Cave, Trinidad, as a paleoclimate archive, the local expression of the 8. READ MORE

6. 4. Mid-Holocene mineral dust deposition in raised bogs in southern Sweden : Processes and links

   Author : Jenny Sjöström; Malin Kylander; Carl-Magnus Mörth; Bindler Richard; Lisa Belyea; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Paleodust; peat; geochemistry; mineralogy; REE; Holocene; peat accumulation rates; paleostorms; Marine Geology; maringeologi;

   Abstract : Atmospheric mineral dust is a key component of the climate system, which affects insolation, brings nutrients to marine and terrestrial ecosystems, and acts as a cloud condensation nuclei. To reconstruct past patterns in terrestrial dust deposition natural archives may be utilized, such as loess, dunes, lakes, and peat bogs. READ MORE

7. 5. Tracking environmental changes of the Baltic Sea coastal zone since mid-Holocene

   Author : Wenxin Ning; Centrum för miljö- och klimatvetenskap (CEC); []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES;

   Abstract : In this thesis, I used two coastal sediment sequences from SE Sweden to study how Baltic Sea coastal environment has changed since the mid-Holocene. The results show the coastal environment has been influenced by multi-stressors, such as climate change, shoreline regression and anthropogenic activities. READ MORE