Chemical oceanography

« Return

Objectives

Characterize the chemical composition of seawater, both in terms of dissolved solids (main, secondary and trace elements) and in terms of particulate matter.
a) Understand spatial and in depth compositional variability.
b) Associate the chemical composition of sea water with ocean circulation.
c) Understand the mechanisms that modify the chemical composition of seawater.
d) Understand the anthropogenic influence on the chemical composition of sea water, particularly on acidification.
e) Characterize the main mechanisms of mass transport to the oceans.
f) Establish geochemical balances for the main species in solution in seawater.
g) Conceptualize models of chemical composition of sea water.
h) Characterize the main geochemical cycles and understand the role of seawater on them.
i) Characterize the chemical composition of marine sediments.
j). Understand the importance of marine sediments as geochemical sinks.

Program

Chapter1: Salinity/temperature/density/CO2/alkalinity.Mainelementsofseawater.Minorandtraceelementsofseawater.Particulate
matter.
Chapter 2: Processes that modify the composition of seawater. Biological processes. Interaction with volcanic activity. Interaction with
marine sediments. Anthropogenic influence: pH and ocean acidification.
Chapter 3: Mass transport to the oceans: the water, the atmospheric and the hydrothermal vias
Chapter 4: Geochemical balances. The concept of residence time. Geochemical balances: CI, Na, S, Mg. K, Ca, HCO3, Si, P and N.
Modeling the chemical composition of sea water.
Chapter 5: The geochemical cycles and the oceans: the carbon cycle, the phosphorus cycle and the nitrogen cycle.
Chapter 6: Geochemistry of marine sediments. Classification and composition. Marine sediments as geochemical sinks.

Teaching Methodologies

The theoretical and practical teaching of Chemical Oceanography will be based on a succession of complementary lessons of both types.
Theoretical classes: theoretical teaching based on MS-Power Point, so that the subject is explained in an attractive way. Practical classes: include solving problems related to the subject taught, as well as carrying out group laboratory work on seawater samples collected bystudents during the field classes.

Bibliography

Berner, E.K. & Berner R.A. (2012) Global environment. Water, air and geochemical cycles. Princeton University Press, Princeton, 444 p

Chester R. & Jickells, T. (2012) Marine geochemistry. Wiley-Blackwell, Chichester, 411 p.

Kump, L.R, Kasting, J.E. & Crane R.G. (2010) The earth system. Prentice-Hall, San Francisco.

Ryan, P. (2014) Environmental and low temperature geochemistry. Wiley-Blackwell, Chichester, 402 p.

Schlesinger, W.H. (1997) Biogeochemistry. An analysis of global change. Academic Press, San Diego, 588 p.

Thurman, H. V. & Trujillo, A.P. (2002) Essentials of oceanography. Prentice-Hall, Upper Saddle River, 524 p.

Code

02016598

ECTS Credits

6

Classes

  • Práticas e Laboratórios - 6 hours
  • Teóricas - 30 hours
  • Teórico-Práticas - 20 hours
  • Trabalho de Campo - 4 hours

Evaluation Methodology

  • Practical part: 50%
  • Theoretical part : 50%