EGU2020-3984
https://doi.org/10.5194/egusphere-egu2020-3984
EGU General Assembly 2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Artificial intelligence for discrimination of sediment facies based on high-resolution elemental and colour data from coastal sediments of the East Frisian Wadden Sea, Germany

An-Sheng Lee1,2, Dirk Enters3, Sofia Ya Hsuan Liou2, and Bernd Zolitschka1
An-Sheng Lee et al.
  • 1University of Bremen, Institute of Geography, Bremen, Germany (alee@uni-bremen.de)
  • 2National Taiwan University, Department of Geosciences, Taipei, Taiwan
  • 3Lower Saxony Institute for Historical Coastal Research, Wilhelmshaven, Germany

Sediment facies provide vital information for the reconstruction of past environmental variability. Due to rising interest for paleoclimate data, sediment surveys are continually growing in importance as well as the amount of sediments to be discriminated into different facies. The conventional approach is to macroscopically determine sediment structure and colour and combine them with physical and chemical information - a time-consuming task heavily relying on the experience of the scientist in charge. Today, rapidly generated and high-resolution multiproxy sediment parameters are readily available from down-core scanning techniques and provide qualitative or even quantitative physical and chemical sediment properties. In 2016, an interdisciplinary research project WASA (Wadden Sea Archive) was launched to investigate palaeo-landscapes and environments of the Wadden Sea. The project has recovered 92 up to 5 m long sediment cores from the tidal flats, channels and off-shore around the island of Norderney (East Frisian Wadden Sea, Germany). Their facies were described by the conventional approach into glacioflucial sands, moraine, peat, tidal deposits, shoreface sediments, etc. In this study, those sediments were scanned by a micro X-ray fluorescence (µ-XRF) core scanner to obtain high-resolution records of multi-elemental data (2000 µm) and optical images (47 µm). Here we propose a supervised machine-learning application for the discrimination of sediment facies using these scanning data. Thus, the invested time and the potential bias common for the conventional approach can be reduced considerably. We expect that our approach will contribute to developing a more comprehensive and time-efficient automatic sediment facies discrimination.

Keywords: the Wadden Sea, µ-XRF core scanning, machine-learning, sediment facies discrimination

How to cite: Lee, A.-S., Enters, D., Liou, S. Y. H., and Zolitschka, B.: Artificial intelligence for discrimination of sediment facies based on high-resolution elemental and colour data from coastal sediments of the East Frisian Wadden Sea, Germany, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-3984, https://doi.org/10.5194/egusphere-egu2020-3984, 2020