AG-842 The Marine Cryosphere and its Cenozoic History (10 ECTS)

AG-342/842 excursion to Tunabreen. Photo: Riko Noormets/UNIS.

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ID:
AG-842
CREDITS:
10 ECTS
START DATE:
19 April 2017
END DATE:
15 May 2017
COURSE PERIOD:
Spring semester (April–May), annually.
LANGUAGE OF INSTRUCTION AND EXAMINATION:
English
CREDIT REDUCTION/OVERLAP:
10 ECTS overlap with AG-342
GRADE:
Letter grade (A through F)
COURSE MATERIAL:
Curriculum/reading list: Ca. 450 pages
COURSE COSTS:
Fieldwork, NOK 400–1000 (2–5 days x NOK 200 per day)
COURSE CAPACITY MIN/MAX:
10/20 students (AG-342/842 in total)
EXAMINATION SUPPORT MATERIAL:
Bilingual dictionary between English and mother tongue
APPLICATION DEADLINE:
15 October 2016

INSTRUCTORS:

Martin Jakobsson
Martin Jakobsson
Adjunct Professor in Marine Geology

Course requirements:

Enrolment in a PhD programme in Earth sciences. Fundamentals of geology especially within sedimentology, corresponding to AG-209, AG-210 or AG-211, or equivalent.

Academic content:

The term marine cryosphere is used to collectively describe frozen water within the marine portion of the Earth’s surface. This incorporates marine based ice sheets including ice shelves and ice streams, icebergs, sea ice, and subsea permafrost. The marine cryosphere has played a key role during several time periods of the Earth’s geological history and is a critical component in studies of climate change. In this course, the students will learn about the evolution of the marine cryosphere during the Cenozoic when the Earth’s experienced a long term palaeoclimatic change from the warm greenhouse to the colder icehouse world.

The course embraces the marine environment from shallow shelves to the deep ocean. Arctic and Antarctic analogies and differences with respect to the Cenozoic history of the marine cryosphere will be discussed.

The main topics of the course are:

  1. General physical characteristics of the marine cryosphere: marine based ice sheets, icebergs, sea ice and subsea permafrost
  2. Dynamics of marine based ice sheets and sea ice
  3. Marine glaciogenic landforms: mapping and interpretation
  4. Sea ice and glacial sediment proxies: from biomarkers to ice rafted debris
  5. Past and present drift patterns of sea ice and icebergs: implications for interpretation of palaeo-proxies
  6. The Cenozoic history of the marine cryosphere
  7. Ice sheet modelling: limitations and possibilities to simulate the marine components
  8. The cryosphere’s interaction with the marine environment and climate

Geological/geophysical data, providing information on the spatial extent and dynamics of the Svalbard-Barents ice sheet during the Last Glacial Maximum, are compared with ice sheet modelling results in the laboratory computer exercises. This will give the students a direct insight into the present limitations and possibilities to simulate the key components of marine based ice sheets; ice streams and ice shelves.

Learning outcomes:

Knowledge
Upon completing the course, the students will have:
Knowledge about the Cenozoic history of the marine cryosphere and physical characteristics of its components, and their interaction with the marine environment and climate; a general understanding of the main survey methods and tools applied to study the marine cryosphere, knowledge of the main palaeo proxies used to study the marine cryosphere’s Cenozoic history and an understanding of capabilities and limitations of numerical ice sheet models.

Skills
Upon completing the course, the students will have:
Practical skills on analysis of geological records, such as mapped marine glaciogenic landforms and sediment cores, that can be used to reconstruct the palaeo-history of the marine cryosphere. Practical skills from assisting in data acquisition during fieldwork, analytical skills to determine limitations and possibilities in modelling studies of marine ice sheets including ice shelves and ice streams and ability to design and carry out a research project and by synthesizing the results with data from various sources, explain and challenge the existing theories.

General competences
Upon completing the course, the students will have:
Basic experience in Arctic fieldwork planning and execution, independent as well as team-work skills, independent research writing skills on given topic, presentation skills, written and oral and skills in communicating current research topics to the public.

Learning activities:

The course extends over 4 weeks including compulsory safety training, and is run in combination with AG-342.

Prior to the course, as a pre-course assignment, the students are asked to prepare a short talk about their PhD projects specifying its relevance to the content of the course and present it in a seminar early in the course.

Through the lectures, fieldwork, lab exercises and individual project work, the students will be introduced to the marine cryosphere and its components. Specific emphasis is placed on describing and discussing available methods to study the geological history of the marine cryosphere.

The course includes 2–5 days fieldwork based on the sea ice in front of one of Svalbard’s tidewater glaciers. The fieldwork will give students first-hand experience of geophysical, geological and oceanographic data collection and sampling procedures. This fieldwork is coordinated with course AG-839 since multibeam mapping, sedimentological and oceanographic data are acquired from the same area.

In a seminar towards the end of the course the students will present the results of their course projects in a 10–15 min. oral presentation to the class for discussion. Finally the students will, as part of the course assessment, complete a scientific project report.

Total lecture hours, seminars and practical exercises: Ca. 50 hours.
Fieldwork: 2–5 days.

Compulsory learning activities:

Fieldwork/cruise, two seminars, two oral presentations (one at each seminar).

All compulsory learning activities must be approved in order to sit the exam.

Assessment:

Method Duration
Percentage of final grade
Written project report 30%
Written exam 4 hours 70%

All assessments must be passed in order to pass the course.

Each assessment is graded, and subsequently combined into a single grade. Partial grades for each assessment will be available.

 

Application deadline: 15 October 2016

AG-342/842 excursion. Photo: Riko Noormets/UNIS.

AG-342/842 excursion. Photo: Riko Noormets/UNIS.

AG-342/842 excursion to Tunabreen. Photo: Riko Noormets/UNIS.

AG-342/842 excursion to Tunabreen. Photo: Riko Noormets/UNIS.

CONTACT INFO

The University Centre in Svalbard
Telephone: +47 79 02 33 00
Fax: +47 79 02 33 01
E-mail: post@unis.no / webmaster@unis.no
Address: P.O. Box 156 N-9171 Longyearbyen
Org. no. 985 204 454

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