Kan Jorden miste balancen? - Palæomagnetikere leder efter svaret

Det er svært at forestille sig, at en hel planet kan miste balancen. Det er ikke desto mindre det, der muligvis er sket tidligere i Jordens geologiske historie. Det drejer sig om det mærkelige fænomen “polvandring”, hvor hele Jorden tipper i forhold til rotationsaksen. I disse år forskes der intenst i polvandring og specielt den mulige indflydelse, som polvandring har haft på Jordens klima og livets udvikling

Magnetisk klimaforskning - påvirker Jordens magnetfelt klimaet

En simpel sammenligning imellem klimadata fra drypstenshuler og en ny rekonstruktion af Jordens tidligere magnetfelt indikerer, at Jordens magnetfelt har påvirket klimaet igennem de sidste fem tusinde år

DODEX – Geoscience Documents and Data for Exploration in Greenland

In the following we describe the project Geoscience Documents and Data for Exploration in Greenland, in short DODEX. A central part of DODEX is an interactive web application (http://www.geus.dk/dodex/) that provides easy access to all non-confidential company geoscience reports received by the authorities in Greenland and Denmark in accordance with the Mineral Resources Act of Greenland (1 January 2010) and associated regulations. From the web application it is possible to search in the DODEX report database using alphanumeric and geographic search criteria and to access report metadata. It is also possible to download the actual report as a PDF file. In addition to the open DODEX web application, the project also includes the development of a closed web application where authorised users can access confidential reports. The DODEX project was carried out at the Geological Survey of Denmark and Greenland (GEUS) in cooperation with the Bureau of Minerals and Petroleum (BMP) under the Government of Greenland as part of the promotion of the mineral resources of Greenland

Er polvendingen nær? - sandsynligheden palæomagnetisk set

Jordens magnetfelt er aftaget 10 procent over de sidste 170 år. Nye målinger fra blandt andet den danske Ørsted-satellit viser, at de magnetiske poler nu flytter sig ca. 50 km om året. Men er det usædvanligt hurtigt? Nogle forskere mener ja. De tolker ændringerne som tegn på, at Jordens magnetfelt er på vej mod en polvending (se Peter Staunings artikel i GeologiskNyt nr. 5, 2004)

Geodata in the Cloud

The cloud offers great advantages for internet hosting of applications and data. In this paper, we review and discuss some of these advantages in relation to a new cloud-hosted Web-GIS application for the Danish Road Directorate, serving live traffic geodata to Danish road users. The new traffic map represents an example of geodata served from a cloud platform offering a fast, scalable, and stable Web-GIS application, in a solution that is cost-efficient compared to what would otherwise be possible based on dedicated servers. The paper shortly discuss some of the considerations that went into the design of the solution, touching also on important issues related to cloud hosting

Tin-Containing Silicates: Identification of a Glycolytic Pathway via 3-Deoxyglucosone

We identify a glycolytic pathway through 3-deoxyglucosone using Lewis acid catalysts resulting in the formation of bio-based monomers.</p