Ocean Applications

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» Lecture 18 Notes
Lecture notes, two slides per page, for annotation.

» Lecture 19 Notes
Lecture notes, two per page, on clumped isotopes for annotation.

» Lecture 20 Notes
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» Lecture 21 Notes
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» Lecture 22 notes
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» Lecture 23 Notes
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» Lecture 24 Slides

Lecture 18 - Mass-independent Fractionation

In this lecture, we will be learning about two applications of mass-independent isotope effects: the use of triple oxygen isotope measurements to decipher gross oxygen production in the surface ocean, and the use of triple sulfur isotopes to understand the history of oxygenation of the atmosphere-ocean system in geologic history.

Lecture 19 - Clumped Isotopes

This lecture is an introduction into the concept of multiple substituted (i.e. two or more rare isotopes) isotopologues and the application of this concept to paleo-temperature determinations.

Lecture 20 - Non-conventional Stable Isotopes

In this lecture we explore the use of non-conventional stable isotope systems, particularly Mo and Ca, to  better constrain sea-surface temperatures in the geologic past, variations in continental eroxsion/weathering, and the oxygenation of the ocean/atmosphere systems in the Precambrian.

Lecture 21 - Particle scavenging/Ocean circulation

This "make-up" lecture applies concepts learned in the last "super-problem", particularly the export of particle-reactive radionuclides from the water column, to reconstructing changes in ocean circulation/ventilation between the last glacial maximum and the Holocene.

Lecture 22 - Marine Isotope Systematics

This lecture is intended to provide an introduction into the many isotope records of seawater that are archived in marine sediments.  We will explore the marine strontium isotope record as an example and probe mass balance equations for systems in steady-state those not at steady-state.  We will also explore the response of systems to perturbations, that can teach us about the resiliency of these systems.

Lecture 23 - Sediments

This lecture covers some important issues involving radionuclides in sediments, including the determination of sedimentation/sediment accumulation rates, the role of radionuclides in detecting unusual sources of dissolved (and particulate) matter to the oceans, and the need to properly normalize sediment records to extract paleo-information from such records.

 

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Last updated December 6, 2012
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