A landslide database for Nicaragua: a tool for landslide-hazard management

Devoli, Graziella; Strauch, W.; Cámara-Chávez, Guillermo; Höeg, Kaare

doi:10.1007/s10346-006-0074-8

Cited by 77 publications

(35 citation statements)

References 18 publications

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“…In its wake, it triggered hundreds of thousands of landslides in Nicaragua, El Salvador, Honduras and Guatemala, causing an estimated 18,800 fatalities and over USD$14.8 billion in damages (EM-DAT 2008). Following the hurricane, teams of landslide experts from the U.S. Geological Survey (USGS) and others used multi-temporal aerial photographs and field mapping to estimate the locations and perimeter of over 24,000 landslides in selected study areas over the four countries (Bucknam et al 2001;Harp et al 2002;Rodriguez et al 2006;Devoli et al 2007). The locations of the study areas and mapped landslides are shown in Fig.…”

Section: Regional Settingmentioning

confidence: 99%

Advances in landslide nowcasting: evaluation of a global and regional modeling approach

et al. 2011

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The increasing availability of remotely sensed data offers a new opportunity to address landslide hazard assessment at larger spatial scales. A prototype global satellite-based landslide hazard algorithm has been developed to identify areas that may experience landslide activity. This system combines a calculation of static landslide susceptibility with satellite-derived rainfall estimates and uses a threshold approach to generate a set of 'nowcasts' that classify potentially hazardous areas. A recent evaluation of this algorithm framework found that while this tool represents an important first step in larger-scale near real-time landslide hazard assessment efforts, it requires several modifications before it can be fully realized as an operational tool. This study draws upon a prior work's recommendations to develop a new approach for considering landslide susceptibility and hazard at the regional scale. This case study calculates a regional susceptibility map using remotely sensed and in situ information and a database of landslides triggered by Hurricane Mitch in 1998 over four countries in Central America. The susceptibility map is evaluated with a regional rainfall intensity-duration triggering threshold and results are compared with the global algorithm framework for the same event. Evaluation of this regional system suggests that this empirically based approach provides one plausible way to approach some of the data and resolution issues identified in the global assessment. The presented methodology is straightforward to implement, improves upon the global approach, and allows for results to be transferable between regions. The results also highlight several remaining challenges, including the empirical nature of the algorithm framework and adequate information for algorithm validation. Conclusions suggest that integrating additional triggering factors such as soil moisture may help to improve algorithm performance accuracy. The regional algorithm scenario represents an important step forward in advancing regional and global-scale landslide hazard assessment.

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Section: Regional Settingmentioning

confidence: 99%

Advances in landslide nowcasting: evaluation of a global and regional modeling approach

et al. 2011

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“…Italy (Guzetti et al, 1994), New Zealand (Glade and Crozier, 1996), Nicaragua (Devoli et al, 2007). Most of these inventories exclude snow avalanches, ice falls and subaqueous slides which are usually considered in separate collections (Garcia and Jamard, 2002;Harvey, 2002a).…”

Section: Introductionmentioning

confidence: 99%

“…Usually, only one type of slide is included and only a short period of time or limited area is covered. Norwegian examples of such inventories are the NGI snow avalanche collection of 200 extreme run out avalanches (Lied and Bakkehøi, 1980), the 3600 historically documented events involving damage and fatalities collected at the Geological Survey of Norway (NGU) (Furseth, 2003) and records of slides held by the Directorate of Public Roads and the National Rail Administration.…”

Section: Introductionmentioning

confidence: 99%

Integrated database for rapid mass movements in Norway

Jaedicke

Lied

Kronholm

2009

Nat. Hazards Earth Syst. Sci.

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Abstract. Rapid gravitational slope mass movements include all kinds of short term relocation of geological material, snow or ice. Traditionally, information about such events is collected separately in different databases covering selected geographical regions and types of movement. In Norway the terrain is susceptible to all types of rapid gravitational slope mass movements ranging from single rocks hitting roads and houses to large snow avalanches and rock slides where entire mountainsides collapse into fjords creating flood waves and endangering large areas. In addition, quick clay slides occur in desalinated marine sediments in South Eastern and Mid Norway. For the authorities and inhabitants of endangered areas, the type of threat is of minor importance and mitigation measures have to consider several types of rapid mass movements simultaneously.An integrated national database for all types of rapid mass movements built around individual events has been established. Only three data entries are mandatory: time, location and type of movement. The remaining optional parameters enable recording of detailed information about the terrain, materials involved and damages caused. Pictures, movies and other documentation can be uploaded into the database. A web-based graphical user interface has been developed allowing new events to be entered, as well as editing and querying for all events. An integration of the database into a GIS system is currently under development.Datasets from various national sources like the road authorities and the Geological Survey of Norway were imported into the database. Today, the database contains 33 000 rapid mass movement events from the last five hundred years covering the entire country. A first analysis of the data shows that the most frequent type of recorded rapid mass movement is rock slides and snow avalanches followed by debris slides in third place. Most events are recorded in the steep fjordCorrespondence to: C. Jaedicke (cj@ngi.no) terrain of the Norwegian west coast, but major events are recorded all over the country. Snow avalanches account for most fatalities, while large rock slides causing flood waves and huge quick clay slides are the most damaging individual events in terms of damage to infrastructure and property and for causing multiple fatalities. The quality of the data is strongly influenced by the personal engagement of local observers and varying observation routines. This database is a unique source for statistical analysis including, risk analysis and the relation between rapid mass movements and climate. The database of rapid mass movement events will also facilitate validation of national hazard and risk maps.

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“…At that time, several countries had already established national and regional landslide inventories, and a recent (July 2015) Google search revealed that as many as 46 countries have now established landslide databases. Most European countries have landslide databases (Van Den Eeckhaut and Hervas 2012), and recent efforts to compile landslide databases have been undertaken in Malaysia (Murakami et al 2014) and Nicaragua (Devoli et al 2007). …”

Section: Introductionmentioning

confidence: 99%

New Zealand’s National Landslide Database

et al. 2017

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A New Zealand Landslide Database has been developed to hold all of New Zealand's landslide data and provide factual data for use in landslide hazard and risk assessment, including a probabilistic landslide hazard model for New Zealand, which is currently being developed by GNS Science. Design of a national Landslide Database for New Zealand required consideration of existing landslide data stored in a variety of digital formats and future data yet to be collected. Pre-existing landslide datasets were developed and populated with data reflecting the needs of the landslide or hazard project, and the database structures of the time. Bringing these data into a single database required a new structure capable of containing landslide information at a variety of scales and accuracy, with many different attributes. A unified data model was developed to enable the landslide database to be a repository for New Zealand landslides, irrespective of scale and method of capture. Along with landslide locations, the database may contain information on the timing of landslide events, the type of landslide, the triggering event, volume and area data, and impacts (consequences) for each landslide when this information is available. Information from contributing datasets include a variety of sources including aerial photograph interpretation, field reconnaissance and media accounts. There are currently 22,575 landslide records in the database that include point locations, polygons of landslide source and deposit areas, and linear landslide features. Access to all landslide data is provided with a web application accessible via the Internet. This web application has been developed in-house and is based on open-source software such as the underlying relational database (PostGIS) and the map generating Web Map Server (GeoServer). Future work is to develop automated data-upload routines and mobile applications to allow people to report landslides, adopting a consistent framework.

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A landslide database for Nicaragua: a tool for landslide-hazard management

Cited by 77 publications

References 18 publications

Advances in landslide nowcasting: evaluation of a global and regional modeling approach

Advances in landslide nowcasting: evaluation of a global and regional modeling approach

Integrated database for rapid mass movements in Norway

New Zealand’s National Landslide Database

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