|
| Udgave: |
Efterår 2012 NAT |
| Point: |
7,5 |
| Blokstruktur: |
2. blok |
| Skemagruppe: |
B |
| Institutter: |
Niels Bohr Institute |
| Uddannelsesdel: |
Kandidat niveau |
| Kontaktpersoner: |
Bo Vinther, telefon: 35 32 05 18, kontor: Rockefeller Komplekset RF244, e-mail: bvinther@nbi.ku.dk
|
| Skema- oplysninger: |
 Vis skema for kurset
Samlet oversigt over tid og sted for alle kurser inden for Lektionsplan for Det Naturvidenskabelige Fakultet Efterår 2012 NAT |
| Undervisnings- periode: |
19. november, 2012 - 27. januar, 2013 |
| Undervisnings- form: |
Forelæsninger og øvelser. |
| Formål: |
The course focuses on the interpretation of ice core records, especially how to extract information on the climate of the past from ice cores drilled on a dynamic ice sheet. The course aims at providing the tools for understanding the ice core data, i.e. how to create time scales for the ice cores and how to model the evolution of ice sheets in response to climate change. There will be a special focus on the interpretation of Greenland water stable isotope records and borehole temperature records, and how to extract past temperature conditions and the ice sheet evolution from these records. |
| Kompetence- beskrivelse: |
The course should give the students the following knowledge and competences:
An understanding of the climatic evolution during the past glacial and present inter glacial.
An understanding of the atmospheric fractionation processes and firn diffusive processes responsible for the climatic signals in ice core stable isotope profiles.
An understanding of densification process involved in the compaction of snow to ice.
An understanding of the advective and diffusive processes involved ice sheet temperatures and a basic knowledge of forward modeling of borehole temperature profiles.
The ability to create modeled steady-state and non-steady state ice core time scales.
The ability to make simple ice sheet models.
The ability to correct detailed ice core stable isotope profiles for the diffusion observed in the snow and firn. |
| Målbeskrivelse: |
The course is based on lectures and computer experiments where the students will use MATLAB for creating models of ice sheet evolution, ice sheet time scales and ice sheet temperatures. The course will cover the following subjects:>br>
Ice core time scales based on steady-state flow models.
Stable water isotopes and their climatic interpretation, Rayleigh modeling of isotopic fractionation.
Non-steady state ice flow modeling, taking into account changes in precipitation and ice sheet evolution.
Densification of snow to ice.
Temperatures in ice sheets, the roles of advective and diffusive processes.
|
| Lærebøger: |
Lecture notes and selected research papers |
| Tilmelding: |
Foregår på selvbetjeningen d. 15.maj - 1. juni. |
| Faglige forudsætninger: |
Basic knowledge on physics or geoscience. Mat intro and Mat F or equivalent |
| Eksamensform: |
48 timers hjemmeopgave bedømt efter 7-trinsskalaen. Intern censur. Reeksamen: Mundtlig 30 min, forberedelse 30. min. med alle hjælpemidler. Intern censur bedømt efter 7-trins-skalaen. |
| Eksamen: |
48-timers hjemmeopgave: Udleveres den 16. januar og afleveres den 18. januar 2013.
Reeksamen: Mundtlig prøve d. 19. april 2013. |
| Kursus hjemmeside: |
 |
| Undervisnings- sprog: |
Engelsk
|
| Sidst redigeret: |
10/9-2012 |