References of "Havenith, Hans-Balder"
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See detailTien Shan geohazards database: Earthquakes and landslides
Havenith, Hans-Balder ULg; Strom, Alexander; Torgoev, Isakbek et al

in Geomorphology (in press)

In this paper we present new and review already existing landslide and earthquake data for a large part of the Tien Shan, Central Asia. For the same area, only partial databases for sub-regions have been ... [more ▼]

In this paper we present new and review already existing landslide and earthquake data for a large part of the Tien Shan, Central Asia. For the same area, only partial databases for sub-regions have been presented previously. They were compiled and new data were added to fill the gaps between the databases. Major new inputs are products of the Central Asia Seismic Risk Initiative (CASRI): a tentative digital map of active faults (even with indication of characteristic or possible maximum magnitude) and the earthquake catalogue of Central Asia until 2009 that was now updated with USGS data (to May 2014). The new compiled landslide inventory contains existing records of 1600 previously mapped mass movements and more than 1800 new landslide data. Considering presently available seismo-tectonic and landslide data, a target region of 1200 km (E–W) by 600 km (N–S) was defined for the production of more or less continuous geohazards information. This target region includes the entire Kyrgyz Tien Shan, the South-Western Tien Shan in Tajikistan, the Fergana Basin (Kyrgyzstan, Tajikistan and Uzbekistan) as well as the Western part in Uzbekistan, the North-Easternmost part in Kazakhstan and a small part of the Eastern Chinese Tien Shan (for the zones outside Kyrgyzstan and Tajikistan, only limited information was available and compiled)... [less ▲]

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See detailTien Shan Geohazards Database: Landslide susceptibility analysis
Havenith, Hans-Balder ULg; Torgoev, Almazbek ULg; Schlögel, Romy et al

in Geomorphology (in press)

This paper is the second part of a new geohazards analysis applied to a large part of the Tien Shan, Central Asia, focused on landslide susceptibility computations that are based on recently compiled ... [more ▼]

This paper is the second part of a new geohazards analysis applied to a large part of the Tien Shan, Central Asia, focused on landslide susceptibility computations that are based on recently compiled geographic, geological and geomorphological data. The core data are a digital elevation model, an updated earthquake catalogue, an active fault map as well as a new landslide inventory. The most recently added digital data are a new simplified geological map, an annual precipitation map, as well as river and road network maps that were produced for the Kyrgyz and Tajik parts of the Tien Shan. On the basis of these records we determine landslide densities with respect to morphological (M), geological (G), river distance (R), precipitation (P), earthquake (E) and fault (F) distance factors. Correlations were also established between scarp locations and the slope angle, distance to rivers, curvature. These correlations show that scarps tend to be located on steeper slopes, farther from rivers and on more convex terrain than the entire landslides. On the basis of the landslide density values computed for each class of the aforementioned factors, two landslide susceptibility maps are created according to the Landslide Factor analysis: ... [less ▲]

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See detailRadar remote sensing observations to monitor landslides and prepare inventories for hazard assessment
Schlögel, Romy; Havenith, Hans-Balder ULg; Malet, Jean-Philippe et al

Scientific conference (2015, May)

Abstract: The creation of a landslide inventory encompassing multi-temporal information needs high quality and high-resolution data source as well as a good knowledge of the field. Visual image ... [more ▼]

Abstract: The creation of a landslide inventory encompassing multi-temporal information needs high quality and high-resolution data source as well as a good knowledge of the field. Visual image interpretation and field surveys are the prevailing methods for landslide inventory mapping while remote sensing techniques have become a widely used source of information for measuring the topography and deformation of the Earth surface (e.g. Berardino et al., 2002). Semi-automatic image analysis methods based on remote sensing techniques are proposed but their quality lacks behind the expert mappings (Guzzetti et al., 2012). Advance processing of SAR images have proven their ability for: (1) landslide detection and mapping (Farina et al., 2006; Cascini et al., 2009; Guzzetti et al., 2012), (2) process monitoring (Hilley et al., 2004; Zhao et al., 2012), (3) hazard assessment (e.g. Nikolaeva et al., 2014) and (4) risk management (Bardi et al., 2014). ... [less ▲]

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See detailThe Kambarata 2 blast-fill dam, Kyrgyz Republic: blast event, geophysical monitoring and dam structure modelling
Havenith, Hans-Balder ULg; Torgoev, Isakbek; Torgoev, Almazbek ULg et al

in Geoenvironmental Disasters (2015), 2(1), 1-15

Abstract Background The blast-and earth-fill dam of the Kambarata 2 hydropower station is situated in the seismically active Central Tien Shan region of the Kyrgyz Republic. More than 70% of the dam ... [more ▼]

Abstract Background The blast-and earth-fill dam of the Kambarata 2 hydropower station is situated in the seismically active Central Tien Shan region of the Kyrgyz Republic. More than 70% of the dam volume was produced during a blast event on December 22, 2009. In 2010– 2011, dam construction was completed after earth filling on top of the blasted material and installing concrete and clay screens together with bentonite grouts. A geophysical survey had been completed in 2012–2013, mainly to monitor the resistivities inside the dam. ... [less ▲]

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See detailSeismic hazard assessment of the Kivu rift segment based on a new sismo-tectonic zonation model (Western Branch of the East African Rift system)
Havenith, Hans-Balder ULg; Delvaux, Damien

in EGU General Assembly Conference Abstracts (2015, April)

In the frame of the Belgian GeoRisCA multi-risk assessment project focused on the Kivu and Northern Tanganyika Region, a seismic hazard map has been produced for this area. It is based on a on a recently ... [more ▼]

In the frame of the Belgian GeoRisCA multi-risk assessment project focused on the Kivu and Northern Tanganyika Region, a seismic hazard map has been produced for this area. It is based on a on a recently re-compiled catalogue using various local and global earthquake catalogues. The use of macroseismic epicenters determined from felt earthquakes allowed to extend the time-range back to the beginning of the 20th century, thus spanning about 100 years. The magnitudes have been homogenized to Mw and the coherence of the catalogue has been checked and validated. The seismo-tectonic zonation includes 10 seismic source areas that have been defined on the basis of the regional geological structure, neotectonic fault systems, basin architecture and distribution of earthquake epicenters... [less ▲]

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See detailGIS-Based Landslide Susceptibility Mapping in the Great Lakes Region of Africa, Case Study of Bujumbura Burundi
Nibigira, Léonidas ULg; Draidia, Salah ULg; Havenith, Hans-Balder ULg

in Engineering Geology for Society and Territory-Volume 2 (2015)

Abstract: Landslides in Central Africa represent a constant threat to the population. The present work took its motivation from the increasing number of recorded incidents in recent times. It is focused ... [more ▼]

Abstract: Landslides in Central Africa represent a constant threat to the population. The present work took its motivation from the increasing number of recorded incidents in recent times. It is focused on the analysis of mass movements in a regional context. Remote sensing based on the use of satellite images (Pleiades images of 2011) and aerial photographs (1957, 1958 and 1981) allowed us to identify instabilities at different scales. The study of these mass movements and the characterization of the processes governing ... [less ▲]

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See detailA preliminary regional assessment of earthquake-induced landslide susceptibility for Vrancea Seismic Region
Micu, Mihai; Balteanu, Dan; Iunescu, Constantin et al

in EGU General Assembly Conference Abstracts (2015)

In seismically-active regions, earthquakes may trigger landslides enhancing the short-to-long term slope denudation and sediment delivery and conditioning the general landscape evolution. Co-seismic slope ... [more ▼]

In seismically-active regions, earthquakes may trigger landslides enhancing the short-to-long term slope denudation and sediment delivery and conditioning the general landscape evolution. Co-seismic slope failures present in general a low frequency - high magnitude pattern which should be addressed accordingly by landslide hazard assessment, with respect to the generally more frequent precipitation-triggered landslides. The Vrancea Seismic Region, corresponding to the curvature sector of the Eastern Romanian Carpathians, represents the most active sub-crustal (focal depth > 50 km) earthquake province of Europe. It represents the main seismic energy source throughout Romania with significant transboundary effects recorded as far as Ukraine and Bulgaria. During the last 300 years, the region featured 14 earthquakes with M>7, among which seven events with magnitude above 7.5 and three between 7.7 and 7.9. Apart from the direct damages, the Vrancea earthquakes are also responsible for causing numerous other geohazards, such as ground fracturing, groundwater level disturbances and possible deep-seated landslide occurrences (rock slumps, rock-block slides, rock falls, rock avalanches). ... [less ▲]

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See detailGeophysical investigation of the Hockai Fault Zone, Eastern Belgium
Havenith, Hans-Balder ULg; Nguyen, Frédéric ULg; Halleux, Lucien ULg et al

in EGU General Assembly Conference Abstracts (2015)

In the frame of a regional project evaluating the geothermal potential of the Wallonian Region of Belgium, the Hockai Fault Zone has been identified as one of the most interesting targets. It is a ... [more ▼]

In the frame of a regional project evaluating the geothermal potential of the Wallonian Region of Belgium, the Hockai Fault Zone has been identified as one of the most interesting targets. It is a seismically active fault zone that hosted the largest historical earthquake in Northwestern Europe, the M6-6.5 Verviers event in 1692 as well as a swarm of small earthquakes that was recorded in 1989-90. On the surface, the presence of the fault zones is marked by a series of geomorphic features, such as several landslides near the borders in the northern part, repeated NW-SE oriented scarps all along the Eastern border (over a distance of 40 km), river diversions and captures with formation of paleo-valleys.... [less ▲]

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See detailHazard and Risk Related to Earthquake-Triggered Landslides
Havenith, Hans-Balder ULg; Fan, X.; Torgoev, A.

in Engineering Geology for Society and Territory-Volume 2 (2015)

Abstract This paper first analyses how important earthquake-induced landslide hazards are compared to other geohazards at world-wide scale. Further, we will outline where these hazards may have the ... [more ▼]

Abstract This paper first analyses how important earthquake-induced landslide hazards are compared to other geohazards at world-wide scale. Further, we will outline where these hazards may have the strongest impacts—at regional and local scale. In this regard, we consider the short-and long-term effects of geological, tectonic, climatic and morphological conditions. Hazard and risk related to these processes will also be analysed on the basis of a series of case histories: eg, the 1920 Haiyuan earthquake-landslide disaster in China. A ... [less ▲]

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See detailLandslide Susceptibility Mapping with Data Mining Methods—a Case Study from Maily-Say, Kyrgyzstan
Braun, A.; Fernandez-Steeger, T.; Havenith, Hans-Balder ULg et al

in Engineering Geology for Society and Territory-Volume 2 (2015)

Abstract: 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 ... [more ▼]

Abstract: 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 associated with landslide occurrence was established and analyzed with different data mining algorithms. The most promising results were achieved with an Artificial Neural ... [less ▲]

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See detailSlope instabilities in the north-eastern Algeria: Triggering factors and evolution's mecahnisms
Draidia, Salah ULg; Havenith, Hans-Balder ULg; Ahcene, Bourefis et al

Scientific conference (2014, June)

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See detailGeophysical Monitoring of Artificial Landslide Dam of Kambarata Hydro Power Plant-2 (Kyrgyzstan)
Torgoev, Isakbek; Havenith, Hans-Balder ULg; Torgoev, Almaz

in Landslide Science for a Safer Geoenvironment (2014, January 01)

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See detailHazard and risk related to earthquake-triggered landslide events
Havenith, Hans-Balder ULg

in Landslide Science for a Safer Geoenvironment (2014, January 01)

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See detailIntroduction: Natural Dams and Landslides in Reservoirs
Strom, A.; Havenith, Hans-Balder ULg; Wang, F.

in Landslide Science for a Safer Geoenvironment (2014, January)

Abstract: Introduction describes briefly main problems that are highlighted in the papers selected for the C9 session of the WLF3 “Natural dams and landslides in reservoirs”. Various aspects of ... [more ▼]

Abstract: Introduction describes briefly main problems that are highlighted in the papers selected for the C9 session of the WLF3 “Natural dams and landslides in reservoirs”. Various aspects of interaction between water bodies and surrounding slopes and of the stability of natural and artificial dams are discussed... [less ▲]

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See detailAnalysis of mass movements affecting the region of Constantine
Draidia, Salah ULg; Havenith, Hans-Balder ULg; Benabbas, C.

in EGU General Assembly Conference Abstracts (2014)

Abstract: Mass movements are a very frequent phenomenon in the North-Eastern Algeria, causing a lot of damages among the population and on the infrastructures and representing the most important geohazard ... [more ▼]

Abstract: Mass movements are a very frequent phenomenon in the North-Eastern Algeria, causing a lot of damages among the population and on the infrastructures and representing the most important geohazard. This paper presents some results of the analysis of slope instabilities in many places in the region and especially along the East-West highway. The work show many types of failures characterized by a high degree of heterogeneity. It is clear that the landslides in this area are very complex, in the most cases a combination of ... [less ▲]

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See detailA Conceptual Event-Tree Model for Coseismic Landslide Dam Hazard Assessment
Fan, X.; Huang, R.; van Westen, C. et al

in Landslide Science for a Safer Geoenvironment (2014)

Abstract Earthquakes may trigger a series of multiple cascading geohazard phenomena. For example, coseismic landslides may block rivers and form landslide dams, which occur frequently in tectonically ... [more ▼]

Abstract Earthquakes may trigger a series of multiple cascading geohazard phenomena. For example, coseismic landslides may block rivers and form landslide dams, which occur frequently in tectonically active mountains with narrow and steep valleys. The catastrophic release of water masses from landslide-impounded lakes is capable to produce outburst floods and debris flows, causing loss of lives, housing and infrastructure. Quantifying the probability of these cascading phenomena following a triggering event has been a main ... [less ▲]

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See detailAssessing the vulnerability of sites in the East African Rift Valley to natural hazards: case study of Bujumbura, Burundi
Nibigira, Léonidas ULg; Havenith, Hans-Balder ULg; Dewals, Benjamin ULg et al

Conference (2013, November 13)

Due to the geomorphologic, structural and climatic context, the East African Rift Valley is prone to many natural hazards. The locally high density of the population contributes to related risk. As a ... [more ▼]

Due to the geomorphologic, structural and climatic context, the East African Rift Valley is prone to many natural hazards. The locally high density of the population contributes to related risk. As a result, the impacts on the habitat and infrastructures are constantly increasing. This work is based on a case study near the city of Bujumbura, which, for decades, has been affected by severe floods. Based on a study focusing on one of its rivers, the river Ntahangwa, this work tries to answer some questions related to the potential causes and ways of prevention and management of flood risk. The analysis is based on hydrological considerations while having a look at the possible mutual influences between these hydrological risks and geodynamic hazards. The methodology uses rainfall, geographic, demographic, topographic, and elevation data. Hydraulic modeling reveals the extent of the flood hazard according to its likelihood of occurrence and its sensitivity to geodynamic disturbances. This led us to propose solutions and related prevention/remediation measures. Considering the vulnerability of the population, it is clear that a change of people’s behavior is needed to reduce the total risk they’re exposed to, both with respect to the choice of construction areas and to all kinds of activities related to rivers exploitation. [less ▲]

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See detailLandslide hazard in the North Tanganyika - kivu rift zones: current knowledge and research perspective
Dewitte, Olivier; Albino, F; Delvaux, D et al

Poster (2013, November)

The North tanganyika – Kivu rift zones are areas naturally prone to landsliding where triggering and environmental factors that favour the occurrence of mass movement concentrate. In many places landslide ... [more ▼]

The North tanganyika – Kivu rift zones are areas naturally prone to landsliding where triggering and environmental factors that favour the occurrence of mass movement concentrate. In many places landslide hazard is very high, and anthropogenic factors such as land use change and urban expansion increase the sensibility to slope instability. From seismic to rainfall-induced mass movements we review the current knowledge of the various slope precesses and associated hazards that are present in these equatorial environments. A particular attention is given to urban areas such as Bukavu and Bujumbura where lanslide threat is particularly acute. Research perspectives on landslide inventorying, monitoring, and susceptibility and hazard assesment are presented. [less ▲]

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See detailLandslide Susceptibility, Hazard and Risk Mapping in Mailuu-Suu, Kyrgyzstan
Torgoev, Almazbek ULg; Havenith, Hans-Balder ULg

in Landslide Science and Practice (2013, October)

Detailed reference viewed: 20 (1 ULg)