Anika Braun

Anika Braun
Technische Universität Berlin | TUB · Institut für Angewandte Geowissenschaften

Dr.

About

44
Publications
14,494
Reads
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573
Citations
Introduction
I am an engineering geologist at TU Berlin and I am interested in landslides, GIS, hazard mapping, spatial data analysis, geotechnics, rock mechanics, and environmental geology.
Additional affiliations
March 2015 - March 2018
September 2017 - present
Technische Universität Berlin
Position
  • Professor (Associate)
October 2010 - September 2014
RWTH Aachen University
Position
  • PhD Student
Description
  • - Geographic information systems (GIS) - GIS-based risk mapping - Data mining - Engineering geology exercise courses

Publications

Publications (44)
Article
Full-text available
Background This paper reviews the classical and some particular factors contributing to earthquake-triggered landslide activity. This analysis should help predict more accurately landslide event sizes, both in terms of potential numbers and affected area. It also highlights that some occurrences, especially those very far from the hypocentre/activa...
Article
Full-text available
Multiple factors, such as geology, high mountain topography, seismic activity, climatic conditions and mining activities cause significant landslide hazard in the region around Maily-Say, Kyrgyzstan. To assess the landslide susceptibility a database containing landslide information and geological, morphological and hydrological parameters associate...
Article
Full-text available
For a case study on rock fall simulation and hazard mapping the rock fall site around the San Bartolomé mountain ridge in Southern Spain was investigated. The major aim was to analyse the potential of rock falls and the risk of the inhabitants of the villages Betis and El Chaparral. Thus rock fall debris were mapped in detail to analyse them with r...
Article
Full-text available
Background The landslide inventory of the western flank of Mount Oku, Cameroon, includes spreads or complex landslides, indicating sudden soil weakening, possibly due to seismic activity or heavy rainfall causing groundwater rise. These landslides were likely triggered between 2009 and 2018 based on the dates of the aerial imagery. Identifying trig...
Article
The Newmark displacement (ND) method, which reproduces the interactions between waves, solids, and fluids during an earthquake, has experienced numerous modifications. We compare the performances of a traditional and a modified version of the ND method through the analysis of co-seismic landslides triggered by the 2022 Ms 6.8 Luding earthquake (Sic...
Poster
Full-text available
We are currently conducting an examination of the geotechnical effects associated with HPHS operations in unsealed basins, specifically focusing on slope stability, surface displacements, and erosion. Our research is directed towards understanding how varying reservoir filling levels during HPHS operation, along with resulting fluctuations in groun...
Article
Full-text available
First analyses of landslide distribution and triggering factors are presented for the region affected by the 14 August 2021 earthquake (Mw=7.2) in the Nippes Department, Haiti. Landslide mapping was mainly carried out by comparing pre- and post-event remote imagery (∼0.5–1 m resolution) available on Google Earth Pro® and Sentinel-2 (10 m resolution...
Preprint
Full-text available
First analyses of landslide distribution and triggering factors are presented for the region affected by the August, 14, 2021, earthquake (Mw=7.2) in the Nippes Department, Haiti. Landslide mapping was mainly carried out by comparing pre- and post-event remote imagery (~0.5–1-m resolution) available on Google Earth Pro® and Sentinel-2 (10-m resolut...
Conference Paper
Full-text available
volution de l'occupation du sol et extraction des zones habitées à partir des images satellite Landsat : étude de cas du flanc ouest du mont Oku (Ligne volcanique du Cameroun) WDL Djukem (1*) • ASL Wouatong (1) • A Braun (2) • TM Fernandez-Steeger (2) • and H-B Havenith (4) ABSTRACT Deforestation, intensive agriculture and overgrazing, combined wit...
Chapter
Landslide susceptibility maps can be a useful tool to support holistic urban planning in mountainous environments. Data-driven methods for landslide susceptibility modeling work well even in data scarce areas, and there is an increasing relevance of machine learning methods that help analyze efficiently large and complex datasets. In this contribut...
Article
Full-text available
In this work, we explored a novel approach to integrate both geo-environmental and soil geomechanical parameters in a landslide susceptibility model. A total of 179 shallow to deep landslides were identified using Google Earth images and field observations. Moreover, soil geomechanical properties of 11 representative soil samples were analyzed. The...
Article
Fluid-induced fracture nucleation, propagation and interaction with natural fractures are the crucial issues for well understanding the process of hydraulic fracturing in unconventional reservoirs. In this paper, an explicitly coupled hydro-geomechanical model in two-dimensional Particle Flow Code (PFC2D) is employed to investigate the interaction...
Article
Full-text available
A smoothed particle hydrodynamics (SPH) numerical modeling method implemented for the forward simulation of propagation and deposition of flow-type landslides was combined with different empirical geomorphological index approaches for the assessment of the formation of landslide dams and their possible evolution for a local case study in southweste...
Article
Full-text available
Granite is a typical crystalline material, often used as a building material, but also a candidate host rock for the repository of high-level radioactive waste. The petrographic texture-including mineral constituents, grain shape, size, and distribution-controls the fracture initiation, propagation, and coalescence within granitic rocks. In this pa...
Article
Full-text available
The hydraulic fracturing technology is usually used to stimulate tight gas reservoirs for increasing gas production. The stimulated volume depends in part on the pre-existing natural fractures in a reservoir. The mechanisms influencing the interaction between hydraulic fractures and natural fractures have to be well understood in order to achieve a...
Article
Full-text available
Background Landslides and landslide dams are a major natural hazard causing high socioeconomic risk in inhabited mountainous areas. This is also true for vast parts of south-western China, which are highly prone to slope failures due to several factors, such as a humid climate with high precipitation in the summer months, geological predisposing fa...
Article
Full-text available
Hydraulic fracturing is a useful tool for enhancing rock mass permeability for shale gas development, enhanced geothermal systems, and geological carbon sequestration by the high-pressure injection of a fracturing fluid into tight reservoir rocks. Although significant advances have been made in hydraulic fracturing theory, experiments, and numerica...
Conference Paper
Full-text available
Landslides are the result of a complex interplay of geological, geomorphological, hydrological, climatic and anthropogenic factors, whose relationships have to be clarified in order to understand spatial patterns of landslide susceptibility. Even for regions poor in data a lot can be done to improve this understanding using a simple dataset and sui...
Conference Paper
Full-text available
On the basis of a new classification of seismically induced landslides we outline particular effects related to the delayed and distant triggering of landslides. Those cannot be predicted by state-of-the-art methods. First, for about a dozen events the 'predicted' extension of the affected area is clearly underestimated. The most problematic cases...
Conference Paper
Full-text available
Debris flows and landslide dams are a major natural hazard causing high socioeconomic risk in inhabited mountainous areas. This is also true for vast parts of southwestern China, which are highly prone to slope failures due to several factors, such as a humid climate with high precipitation in the summer months, geological predisposing factors with...
Conference Paper
Full-text available
Seismically induced landslides are a major environmental effect of earthquakes, which may significantly contribute to related losses. Moreover, in paleoseismology landslide event sizes are an important proxy for the estimation of the intensity and magnitude of past earthquakes and thus allowing us to improve seismic hazard assessment over longer te...
Conference Paper
Abstract Seismically induced landslides often contribute to a significant degree to the losses related to earthquakes. The identification of possible extends of landslide affected areas can help to target emergency measures when an earthquake occurs or improve the resilience of inhabited areas and critical infrastructure in zones of high seismic ha...
Conference Paper
Full-text available
Terrestrial laser scanning is a Three-Dimensional (3D) measuring technology that rapidly developed in recent years. By this measuring technology users can generate a 3D point cloud, derive the size and geometry of objects rapidly and accurately and build a high resolution 3D surface model. The technology is widely used in many fields, such as geote...
Conference Paper
Full-text available
Increasing or decreasing the temperature of rock mass will cause the change of its volume and the development of failures because of stress concentration. Thus, the temperature effect is a key factor in rock engineering. However, the temperature effect can also be used in mining engineering. In the Suichang gold mine, whose development can be dated...
Thesis
Download at: https://core.ac.uk/download/pdf/36624496.pdf With the growing amount of production and application of engineered nanoparticles, concerns are raising regarding the fate of the potentially toxic materials in the environment. In order to assess the potential of engineered nanoparticles for migration in soils and aquifers, an experimental...
Article
It is considered inevitable that the increasing production and application of engineered nanoparticles will lead to their release into the environment. However, the behavior of these materials under environmentally relevant conditions is still only poorly understood. In this study the transport and deposition behavior of engineered surfactant stabi...
Article
Transport behavior and fate of engineered silver nanoparticles (AgNP) in the subsurface is of major interest concerning soil and groundwater protection in order to avoid groundwater contamination of vital resources. Sandstone aquifers are important groundwater resources which are frequently used for public water supply in many regions of the world....
Conference Paper
The increasing production of engineered nanoparticles (ENP) and their widespread use in consumer products are raising concerns regarding the release of nanoparticles into the environment, their mobility and fate. Recent studies show uptake and toxic effects of ENP towards many organisms, thus indicating a potential for future contaminants. To asses...
Article
Engineered nanoparticles are increasingly applied in consumer products and concerns are rising regarding their risk as potential contaminants or carriers for colloid-facilitated contaminant transport. Engineered silver nanoparticles (AgNP) are among the most widely used nanomaterials in consumer products. However, their mobility in groundwater has...
Conference Paper
Full-text available
A landslide susceptibility analysis was carried out for a tectonically active high mountain region in Kyrgyzstan with data mining methods. A landslide inventory and a factor dataset based on a digital elevation model and a geological map were investigated for patterns and dependencies regarding landslide occurrence using classification algorithms....
Article
Full-text available
A landslide susceptibility analysis was carried out for a tectonically active high mountain region in Kyrgyzstan with data mining methods. A landslide inventory and a factor dataset based on a digital elevation model and a geological map were investigated for patterns and dependencies regarding landslide occurrence using classification algorithms....
Article
Full-text available
The accelerating production and application of engineered nanoparticles is causing concerns regarding their release and fate in the environment. For assessing the risk that is posed to drinking water resources it is important to understand the transport and retention mechanisms of engineered nanoparticles in soil and groundwater. In this study an e...
Conference Paper
Full-text available
There is a strong possibility that environmental change (whether climate or land use) will be manifest as changes in the size-frequency distribution of landslides in Maily-Say Valley, Kyrgyzstan. The evolution of the landslide activity over the past 50 years has been analysed on the basis of five landslide inventories of 1962, 1984, 1996, 2002 and...
Article
Full-text available
For rockfall simulations, competitive case studies and data sets are important to develop and evaluate the models or software. Especially for empirical or data driven stochastic modelling the quality of the reference data sets has a major impact on model skills and knowledge discovery. Therefore, rockfalls in the Bolonia Bay close to Tarifa (Spain)...

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