Detailed Palaeomagnetic Record for the Last 6300 Years from Varved Lake Deposits in Northern Sweden

Author(s):  
N. -A. Mörner ◽  
C. A. Sylwan
Author(s):  
Ole Bennike ◽  
Anker Weidick

NOTE: This article was published in a former series of GEUS Bulletin. Please use the original series name when citing this article, for example: Bennike, O., & Weidick, A. (1999). Observations on the Quaternary geology around Nioghalvfjerdsfjorden, eastern North Greenland. Geology of Greenland Survey Bulletin, 183, 56-60. https://doi.org/10.34194/ggub.v183.5205 _______________ In North and North-East Greenland, several of the outlet glaciers from the Inland Ice have long, floating tongues (Higgins 1991). Nioghalvfjerdsfjorden (Fig. 1) is today occupied by a floating outlet glacier that is about 60 km long, and the fjord is surrounded by dissected plateaux with broad valleys (Thomsen et al. 1997). The offshore shelf to the east of Nioghalvfjerdsfjorden is unusually broad, up to 300 km wide (Cherkis & Vogt 1994), and recently small low islands were discovered on the western part of this shelf (G. Budeus and T.I.H. Andersson, personal communications 1998). Quaternary deposits are widespread around Nioghalvfjerdsfjorden and include glacial, glaciofluvial, marine, deltaic and ice lake deposits. Ice margin features such as kame deposits and moraines are also common (Davies 1972). The glaciation limit increases from 200 m a.s.l. over the eastern coastal islands to 1000 m in the inland areas; local ice caps and valley glaciers are common in the region, although the mean annual precipitation is only about 200 mm per year. Most of the sea in the area is covered by permanent sea ice, with pack ice further east, but open water is present in late summer in some fjords north of Nioghalvfjerdsfjorden, and in the Nordøstvandet polynia.


2020 ◽  
Vol 20 (1) ◽  
pp. 10-42
Author(s):  
Flora Mary Bartlett

I examine how tensions between locals, environmentalists, and State politicians in a small town in northern Sweden are reinforced through national discourses of climate change and sustainability. Turbulence emerges across different scales of responsibility and environmental engagement in Arjeplog as politicians are seen by local inhabitants to be engaging more with the global conversation than with the local experience of living in the north. Moreover, many people view the environmentalist discourses from the politicians in the south, whom they deem to be out of touch with rural life, as threatening to the local experience of nature. These discourses pose a threat to their reliance on petrol, essential for travel, and are experienced locally as a continuation of the south’s historical interference in the region. Based on thirteen months of field research, I argue that mistrust of the various messengers of climate change, including politicians and environmentalists, is a crucial part of the scepticism towards the climate change discourse and that we as researchers need to utilise the strengths of anthropology in examining the reception (or refusal) of climate change. The locals’ mistrust of environment discourses had implications for my positionality, as I was associated with these perceived ‘outsider’ sensibilities. While the anthropology of climate change often focusses on physical impacts and resilience, I argue that we need to pay due attention to the local turbulence surrounding the discourses of climate change, which exist alongside the physical phenomena.  


Author(s):  
Tim K. Lowenstein ◽  
◽  
R. Bernhart Owen ◽  
Robin W. Renaut ◽  
Daniel M. Deocampo ◽  
...  

2016 ◽  
Author(s):  
Alexander A. Conti ◽  
◽  
Elizabeth H. Gierlowski-Kordesch

The Mesozoic Hartford Basin, a fault-bounded half-graben in New England, is composed of four sedimentologic units displaying lacustrine, playa, and alluvial conditions separated by three tholeiitic basalt flows. Limited outcrop, however, has restricted analyses across the basin. The Jurassic East Berlin Formation, in particular, crops out only in the southern and northern extents of the basin, exposing the upper 100-118-m of deposits. As a result, a new core analysis across a 600-m-transect of East Berlin rocks has been completed in the central region of the basin, exposing the entire 195-m thickness of the formation for the first time. Cores expose eight 3-m-thick lacustrine mudrock units, the upper six of which are correlative to lake deposits identified in the southern and northern extents of the basin. Additionally, thin chicken-wire evaporites demarcate the lowermost, previously unexposed, lacustrine unit, 7-m beneath a 15-cm-thick tufa horizon. Thin playa deposits and thick sheetflood and Vertisol packages separate these lake sequences over 5-30-m of vertical distance.To supplement these sedimentologic data, and better understand lake geochemistry of the basin during East Berlin time, new biomarker analyses have been applied to each of the eight lacustrine mudrock units for the first time. Biomarker data are useful for determining the lake-basin type, a paleolake classification system derived by Bohacs, Carroll, and others to describe predictable physical and geochemical evolution within rift basins from fluvial facies to over-filled, balance-filled, and under-filled lacustrine facies; subsequently, balance-filled lacustrine facies grade to a terminal fluvial facies during changes in accommodation space through time. While fluvial facies envelope lake deposits within the Hartford Basin, identifying the lake types within the East Berlin has been problematic because of limited exposures. These new sedimentologic and biomarker analyses, however, suggest balance-filled lacustrine conditions at the base of the East Berlin that grade into under-filled conditions upsection. These new biomarker data finally provide definitive evidence for changing lake types during East Berlin time.


Hereditas ◽  
2009 ◽  
Vol 73 (2) ◽  
pp. 253-257 ◽  
Author(s):  
L. BECKMAN ◽  
B. CEDERGREN ◽  
M. RASMUSON

Author(s):  
Albin Stjernbrandt ◽  
Nikolai Stenfors ◽  
Ingrid Liljelind

Abstract Objective To determine if exposure to cold environments, during work or leisure time, was associated with increased reporting of airway symptoms in the general population of northern Sweden. Methods Through a population-based postal survey responded to by 12627 subjects, ages 18–70, living in northern Sweden, the occurrence of airway symptoms was investigated. Cold exposure during work or leisure time was self-reported on numerical rating scales. Binary logistic regression was used to determine the statistical association between cold exposure and airway symptoms. Results For currently working subjects (N = 8740), reporting any occupational cold exposure was associated to wheeze (OR 1.3; 95% CI 1.1–1.4); chronic cough (OR 1.2; 95% CI 1.1–1.4); and productive cough (OR 1.3; 95% CI 1.1–1.4), after adjusting for gender, age, body mass index, daily smoking, asthma, and chronic obstructive pulmonary disease. Leisure-time cold exposure was not significantly associated to reporting airway symptoms. Conclusions Occupational cold exposure was an independent predictor of airway symptoms in northern Sweden. Therefore, a structured risk assessment regarding cold exposure could be considered for inclusion in the Swedish workplace legislation.


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