Juerg Beer
Biographic Data
| ID | 5597031 |
|---|---|
| NAME | Juerg Beer |
| GIVEN NAMES | Juerg |
| FAMILY NAME | Beer |
| SIGNATURE | BEER J |
| AFFILIATIONS | Eidgenössische Anstalt für Wasserversorgung, Abwasswerreinigung und Gewuässerschutz, Ueberlandstrasse 133, Postfach 611, CH-8600 Duebendorf, Switzerland. |
| VERIFIED | No |
| TOTAL WORKS | 5 |
| TOTAL CITATIONS | 5 |
| AUTHOR COUNT | 5 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1983 |
| LATEST PUBLICATION YEAR | 2001 |
| H-INDEX | 2 |
Persistent Solar Influence on North Atlantic Climate During the Holocene
Surface winds and surface ocean hydrography in the subpolar North Atlantic appear to have been influenced by variations in solar output through the entire Holocene. The evidence comes from a close correlation between inferred changes in production rates of the cosmogenic nuclides carbon-14 and beryllium-10 and centennial to millennial time scale changes in proxies of drift ice measured in deep-sea sediment cores. A solar forcing mechanism therefo…
Dating of Lake and Loess Sediments
Lake and loess sediments represent archives that record important information about the iocal, regional and global climate conditions in the past. Lake sediments consist of autochthonous particles formed by biogeochemical processes within the lake and allochthonous particles brought into the lake from the catchment area. After deposition, the stratigraphy of the sediment can be altered by chemical, physical and biological processes. Under favored…
Dating Polar Ice by 14 C Accelerator Mass Spectrometry
Results of 14 C/ 12 C ratio measurements on CO 2 extracted from air bubbles in polar ice are presented. The samples investigated originate from the Dye 3, South Greenland, deep ice core and span approximately the last 10,000 years. The results are calibrated with tree-ring records. The 14 C ages are compared with information obtained from seasonal variations of ice-core parameters and rheologic model calculation
Radioisotope Dating with the ETHZ-EN-Tandem Accelerator
During the last three years the ETH-EN-tandem accelerator facility has been adapted for the quantitative determination of the rare isotopes 14 C and 10 Be in mg samples. The goal of this project is to routinely achieve a 1% accuracy when measuring 14 C/ 12 C ratios with a minimum expenditure of human resources and beam time. The concept is similar to that proposed by Purser and Henley (1978). The early evolution of this dating facility was descri…
Temporal 10 Be Variations in Ice
10 Be (T 1/2 = 1.5·10 6 y) is mainly produced in the atmosphere by cosmic ray spallation reactions on nitrogen and oxygen. About 70 % of the production takes place in the stratosphere. 10 Be becomes attached to aerosols within a very short time. If 10 Be is produced in the stratosphere some latitudinal mixing occurs. Most of the 10 Be is transferred to the troposphere during spring and early summer when, mainly at median latitudes, large stratosp…
Temporal 10 Be Variations in Ice
10 Be (T 1/2 = 1.5·10 6 y) is mainly produced in the atmosphere by cosmic ray spallation reactions on nitrogen and oxygen. About 70 % of the production takes place in the stratosphere. 10 Be becomes attached to aerosols within a very short time. If 10 Be is produced in the stratosphere some latitudinal mixing occurs. Most of the 10 Be is transferred to the troposphere during spring and early summer when, mainly at median latitudes, large stratosp…
Dating Polar Ice by 14 C Accelerator Mass Spectrometry
Results of 14 C/ 12 C ratio measurements on CO 2 extracted from air bubbles in polar ice are presented. The samples investigated originate from the Dye 3, South Greenland, deep ice core and span approximately the last 10,000 years. The results are calibrated with tree-ring records. The 14 C ages are compared with information obtained from seasonal variations of ice-core parameters and rheologic model calculation
Radioisotope Dating with the ETHZ-EN-Tandem Accelerator
During the last three years the ETH-EN-tandem accelerator facility has been adapted for the quantitative determination of the rare isotopes 14 C and 10 Be in mg samples. The goal of this project is to routinely achieve a 1% accuracy when measuring 14 C/ 12 C ratios with a minimum expenditure of human resources and beam time. The concept is similar to that proposed by Purser and Henley (1978). The early evolution of this dating facility was descri…
Temporal 10 Be Variations in Ice
10 Be (T 1/2 = 1.5·10 6 y) is mainly produced in the atmosphere by cosmic ray spallation reactions on nitrogen and oxygen. About 70 % of the production takes place in the stratosphere. 10 Be becomes attached to aerosols within a very short time. If 10 Be is produced in the stratosphere some latitudinal mixing occurs. Most of the 10 Be is transferred to the troposphere during spring and early summer when, mainly at median latitudes, large stratosp…
Dating Polar Ice by 14 C Accelerator Mass Spectrometry
Results of 14 C/ 12 C ratio measurements on CO 2 extracted from air bubbles in polar ice are presented. The samples investigated originate from the Dye 3, South Greenland, deep ice core and span approximately the last 10,000 years. The results are calibrated with tree-ring records. The 14 C ages are compared with information obtained from seasonal variations of ice-core parameters and rheologic model calculation
Dating of Lake and Loess Sediments
Lake and loess sediments represent archives that record important information about the iocal, regional and global climate conditions in the past. Lake sediments consist of autochthonous particles formed by biogeochemical processes within the lake and allochthonous particles brought into the lake from the catchment area. After deposition, the stratigraphy of the sediment can be altered by chemical, physical and biological processes. Under favored…
Persistent Solar Influence on North Atlantic Climate During the Holocene
Surface winds and surface ocean hydrography in the subpolar North Atlantic appear to have been influenced by variations in solar output through the entire Holocene. The evidence comes from a close correlation between inferred changes in production rates of the cosmogenic nuclides carbon-14 and beryllium-10 and centennial to millennial time scale changes in proxies of drift ice measured in deep-sea sediment cores. A solar forcing mechanism therefo…
Geology and Paleoclimatology Research (5 works) · Geology (4 works) · Archaeology and ancient environmental studies (3 works) · Climatology (3 works) · Isotope Analysis in Ecology (3 works) · Paleontology (3 works) · Radiocarbon dating (3 works) · Accelerator mass spectrometry (2 works) · Environmental Science (2 works) · Physics (2 works)