The interdisciplinary FIGSS Seminar takes place during the semester every second Monday from 12:00-13:00. The doctoral students of the graduate school have the opportunity to present and discuss their research results. From time to time, external speakers are also invited.
Winter semester 2023/2024
The FIGSS seminar will be take place on-site in attendance this semester. Every other Monday from 12-1pm, we will meet in the lecture hall. There will be 1-2 presentations by our members on each date.
In addition to the scientific presentations, there will be a short talk on a FIAS specific topic on each date. Doris is happy to receive suggestions for this.
The b-value from the Gutenberg-Richter relation captures the ratio between small and large earthquakes triggering for a region. Several researchers have observed fluctuation in b-values prior to an earthquake, especially during the aftershock sequence analysis. By leveraging the ever-increasing earthquake database and the development in the field of deep learning computations, this study focuses on analyzing the spatial-temporal b-value series for Japan.
We follow a two step approach, in the first step a spatial-temporal b-value series is calculated from the earthquake catalog, which takes the shape of a series of [32 × 32] pixel images of spatial b-value distributions. On this we train an autoencoder, which compresses and then decompresses the input to learn the normal behavior and relationships within the data. In the second step, we then take the pixel by pixel reconstruction error as input for a Convolutional Dilated Network, whose model output can be interpreted as a quantity related to the earthquake probability. For this study we developed tow new architectures and compared them with common newtorks to be used on this kind of data. Furthermore we developed a novel training method to mimic real life use.
We expect that this study will improve the understanding of earthquake occurrences which could further be beneficial for Early Warning, rapid response and mitigation plans, especially for sustainable human habitats in earthquake-prone regions.
The FIGSS seminars during the summer semester 2023.
The FIGSS seminars during the winter semester 2022/23.
The FIGSS seminars during the summer semester 2022.
The FIGSS seminars during the winter semester 2020/21.
The FIGSS seminars during the winter semester 2019/20.
Winter semester 2018/19
The FIGSS seminars during the winter semester 2018/19.
The FIGSS seminars during the summer semester 2018.
The FIGSS seminars during the winter semester 2017/18.
Summer semester 2017
The FIGSS seminars during the summer semester 2017.
Winter semester 2016/17
The FIGSS seminars during the winter semester 2016/17.