Academic literature on the topic 'Arktisk station (Disko, Greenland)'

As a continuation of an integrated study of sedimentary and volcanic facies in the Cretaceous to Tertiary West Greenland basin (G. K.Pedersen, 1987; A. K. Pedersen & Larsen, 1987) early Tertiary volcanic rocks were studied in 1987 along a NW-SE trending composite section, about 120 km in length; on Niigssuaq and Disko. The study attempts to establish and describe lithostratigraphic volcanic units in the Tertiary volcanic formations, and through a combination of field mapping, photogrammetry and geochemistry to establish chronostratigraphic horizons through the early Tertiary deposits of the region. In this respect it is essential to identify the same eruptive units as subaeriallava facies and as subaqueous lava or hyaloclastite facies, and to trace subaerial tufts throughout the area. In the first part of the season localities along the Vaigat coast of Nûgssuaq from Kugssinerssuaq in the east to Nûssap qâqarssua in the west were investigated. In the second part of the season very poorly known areas in the western and southem part ofthe Kvandalen region on east Disko were investigated. The field work was supported by the Arctie Station in Godhavn and its cutter Porsild as well as by GGU's cutter J. F. Johnstrup.

ABSTRACTIn 1909, with two companions Swiss meteorologist Alfred de Quervain travelled to the Uummannaq area of west Greenland, to the same area investigated by Erich von Drygalski in 1892–1893. A major objective was to investigate the changes in the nearby outlet glaciers since Drygalski's visit. Man-hauling sledges, de Quervain and his companions also made a sortie into the interior of the ice cap, penetrating to a distance of about 100 km and to a height of about 1700 m. Having thus whetted his appetite, in1912 de Qervain mounted a further expedition aimed at making a crossing of the ice cap, only the second after that of Fridtjof Nansen in 1888, and along a trajectory significantly further north. De Quervain hoped to determine the shape and height of the ice cap along this trajectory. With three companions and using dog-sledges de Quervain set off from the Disko Bugt area of west Greenland and crossed the ice cap to the area of Ammassalik (now Tasiilaq) on the east coast. In 31 days on the ice the party travelled some 640 km, reaching a maximum altitude of 2510 m. A comprehensive range of scientific observations was effected en route. A support party of three men remained at the western edge of the ice cap for the summer to conduct meteorological and glaciological studies. Thereafter two of this group spent the winter of 1912–1913 at the Danish Arctic Station at Godhavn as guests of Morten Porsild to conduct aerological studies using pilot balloons and, to a lesser degree, captive balloons. All quotations in this paper are translated from the German by the author. This article is the first English-language account of de Quervain's expeditions.

NOTE: This article was published in a former series of GEUS Bulletin. Please use the original series name when citing this article, for example: Thorning, L., & Stemp, R. W. (1998). Airborne geophysical surveys in central West Greenland and central East Greenland in 1997. Geology of Greenland Survey Bulletin, 180, 63-66. https://doi.org/10.34194/ggub.v180.5087 _______________ In order to stimulate mining exploration activity in Greenland the Government of Greenland decided in 1993 to finance a five-year programme of airborne electromagnetic surveys over selected regions of Greenland, Project AEM Greenland 1994–1998. By the end of 1996 three surveys had been undertaken in various parts of Greenland (Stemp & Thorning 1995a, b; Stemp 1996a, b; Stemp 1997a, b). In 1992 the Danish Government financed a small aeromagnetic survey (Project Aeromag 1992; Thorning 1993). Regional aeromagnetic surveying was taken up again when the governments of Denmark and Greenland jointly financed two aeromagnetic surveys in 1995 and 1996 – the projects Aeromag 1995 and Aeromag 1996 (Thorning & Stemp 1997). To this suite of airborne geophysical surveys of selected regions in Greenland were added two surveys in 1997, both financed by the Government of Greenland. The fourth year of Project AEM Greenland 1994–1998 encompassed a transient electromagnetic (GEOTEM) and magnetic survey over northern Jameson Land, central East Greenland, while Project Aeromag 97 added a regional aeromagnetic survey over Disko Bugt – Nuussuaq, central West Greenland. As in previous years, commercial geophysical contractors carried out the survey operations in Greenland according to an agreement with the Geological Survey of Denmark and Greenland (GEUS) entered into after international tendering following rules of the European Union. GEUS manages the projects and organises the distribution and use of the results. The new maps and digital data from the two 1997 surveys, a total of 85 252 line kilometres of data covering 51 414 km2, were released to the public on 1 March 1998. This note provides some introductory information about the two surveys. Further information can be found in reports by Stemp (1998) and Thorning (in press); both include a number of full-page colour anomaly maps from the survey areas. The airborne geophysical programme will continue in 1998, and the areas to be surveyed have already been selected. The final year of Project AEM Greenland 1994–1998 will include combined GEOTEM and magnetic surveys over two regions in North Greenland: Washington Land in western North Greenland, where operations are expected to start in May 1998 operating out of Alert in Canada, and later in the season over J.C. Christensen Land in central North Greenland operating out of Station Nord in eastern North Greenland. Project Aeromag 1998 will continue the regional aeromagnetic survey programme in West Greenland, extending the coverage by including most of the region from 63°45′N to 66°N in southern West Greenland. This project will be based at Nuuk and start in March 1998. The Government of Greenland will finance all surveys in 1998. Figure 1 shows all survey areas for the electromagnetic and magnetic surveys of Project AEM Greenland 1994–1998 and the aeromagnetic survey areas of Project Aeromag 1992, 1995, 1996, 1997 and 1998.