https://fordatis.fraunhofer.de/handle/fordatis/221 2026-05-07T21:03:07Z 2026-05-07T21:03:07Z Jagert, Felix Güldenhaupt, Jonas Chatziliadou, Maria https://fordatis.fraunhofer.de/handle/fordatis/393 2025-03-08T02:30:36Z 2024-05-01T00:00:00Z

Titel: Wireline logging and video data of a 224 m deep exploration well in a carbonate karst in Hagen, North Rhine-Westphalia, Germany Datenautorinnen und Datenautoren: Jagert, Felix; Güldenhaupt, Jonas; Chatziliadou, Maria Zusammenfassung: The investigation of karst aquifers is inherently challenging due to their heterogeneous nature. A new borehole, measuring 224 metres in depth, was drilled into the 'Massenkalk' formation in the Steltenberg quarry at Hagen, North Rhine-Westphalia, Germany, with the objective of investigating its potential as a geothermal reservoir analogue (Coordinates of well R1: 401398 / 5690212 UTM 32N). Geophysical logging and camera runs revealed the presence of highly permeable karst structures, which visually displayed vuggy porosity. The permeability of the aquifer seems largely dominated by karst structures, specifically fractures that have been widened by dissolution. Instead of intense fracturing, the rock mass generally appears to be characterised by karstification and secondary porosity. The logging and mapping data were finalised in PDF, TXT and AVI formats as supplementary material of: DOI: 10.1127/zdgg/2025/0450

2024-05-01T00:00:00Z Finger, Claudia Löer, Katrin https://fordatis.fraunhofer.de/handle/fordatis/364 2023-11-14T04:00:29Z 2023-01-01T00:00:00Z

Titel: B3AMpy: Beamforming Toolbox for three-component ambient seismic noise Datenautorinnen und Datenautoren: Finger, Claudia; Löer, Katrin Zusammenfassung: This is an archived version of version 0.1 with small updates from 26.10.2023. The latest version can be found at: https://github.com/cl-finger/B3Ampy A Matlab Version of this code can be found at https://github.com/katrinloer/B3AM

2023-01-01T00:00:00Z Finger, Claudia Saenger, Erik https://fordatis.fraunhofer.de/handle/fordatis/360 2023-11-14T04:00:29Z 2023-01-01T00:00:00Z

Titel: Synthetic ambient seismic noise dataset for testing ambient-noise methods Datenautorinnen und Datenautoren: Finger, Claudia; Saenger, Erik Zusammenfassung: We present a continuous seismic waveform dataset created with the rotated staggered-grid finite-difference simulator HeidimodX (Saenger et al., 2000). The aim of the dataset is to recreate the random nature of ambient seismic noise using numerous synthetic point sources with arbitrary source parameters and locations. Three-component waveforms are recorded at the free surface of a three-dimensional model with two different velocity structures. This dataset can be used to benchmark and test robustness of different methodologies typically applied to ambient noise data.

2023-01-01T00:00:00Z Oberle, Stella Gnann, Till Wayas, Louis Wietschel, Martin https://fordatis.fraunhofer.de/handle/fordatis/334 2023-07-05T03:45:30Z 2023-01-01T00:00:00Z

Titel: Analyzing the regulatory framework gaps for gas distribution networks with decreasing natural gas demand in Germany Datenautorinnen und Datenautoren: Oberle, Stella; Gnann, Till; Wayas, Louis; Wietschel, Martin Zusammenfassung: The two datasets are supplement to the publication Oberle, Stella; Gnann, Till; Wayas, Louis; Wietschel, Martin "Analyzing the regulatory framework gaps for gas distribution networks with decreasing natural gas demand in Germany" (to be published): German energy system studies, investigating the energy transition pathways to the set climate targets, depict a significant decrease in gas demand. This leads to a discussion about the long-term need of gas distribution networks. The discussion intensified with the war in Ukraine and the subsequent energy price crisis. The German regulatory agency responded to these developments with adjusting the regulatory framework to the current challenges. Up to now, the depreciation period of network components varies between 45 to 65 years, and consequently the monetary capital is tied up for a long time, lowering the flexibility of network operators to react to current challenges. Therefore, the German regulatory agency allows the shortening of depreciation periods of new gas network assets. Nonetheless, it is still unclear how to deal with existing assets at risk of becoming stranded assets and how to regulate the decommissioning of gas networks. Therefore, this paper addresses the research question: “What effect do different regulations for decommissioning of gas distribution networks have on operators and users?”. To answer the question the model MERLIN is applied, which integrates the current and future regulation options into long-term investment decision analysis. The results show a need of shortening the depreciation period of existing assets to avoid stranded assets. Further, partial decommissioning with including the decommission costs in the regulatory framework and hence finance it through the network users, is the most economical attractive option for network operator and users.

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