Chemistry & impurities group

MSc and BSc projects in Continuous Flow Analysis (CFA) of chemistry and impurities.

Contact: Helle Kjær and Anders Svensson

These particular master and bachelor projects involve chemical measurements of ice cores, for example informing on wind patterns, aridity, volcanic eruptions and sea ice variability.

Global volcanism of the last glacial period (60, 30, 15 ECTS)

volcanismVolcanism has significant impact on climate and volcanic records are used to force climate models together with orbital forcing, greenhouse gasses etc. Using existing acidity records from Greenland and Antarctic ice cores we are currently mapping out the magnitude and frequency of large volcanic eruptions occurring during the last glacial period (11-115 ka BP). Student projects related to this topic could involve quantification of the deposition of sulfate and chloride on the ice sheets, the frequency and duration of past eruptions based on ice core records, estimates of the climatic impact of the eruptions, or attempts to correlate the major eruptions seen in the ice to well-known pre-historical eruptions. It is also possible to work on tephra particles from the ice cores that are applied to identify the source of eruptions. The projects typically involve some programing for manipulation of large datasets.

Contact: Anders Svensson

Recording the sound of ancient bubbles in ice cores

Msc Thesis Project: The sonic signature of ancient air bubbles in ice cores

Keywords: ice cores; paleoclimate; Greenland; polar research; Continuous Flow Analysis; sound measurements; total air content; Python; spectral analysis; bubbles

The air bubbles occluded in polar ice cores contain extremely valuable paleoclimatic information in the form of ancient air, whose composition can be determined in the lab yielding time series of gas concentrations in atmosphere spanning millennia. Another characteristic of the ancient air bubbles is their popping sound emission when ice core samples are being controllably melted for high-resolution Continuous Flow Analysis measurements.
We would like to investigate the audio signal of the “popping” bubbles. Our goal is to perform high quality sound recordings followed by spectral analysis of the bubble popping frequencies in order to infer how many and how large the bubbles are. Therefore, we offer a Master thesis project for a motivated student who will further develop the recording and melting system as well as work on the data analysis of the sounds recordings.
You can expect to gain skills in sound and bubble physics, sound recordings as well as high resolution ice core measurements. You will also work with noise filtering and spectral analysis techniques. Prior experience in data analysis with Python/Matlab is a plus. PICE is an active, multinational/multicultural group with plenty of learning opportunities.

We will be happy to hear from you!
Should you have any questions on the project feel free to contact:
Vasileios Gkinis