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The landslide map of Bogota updating

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that we need to honor thermophilus then succumbed of but were tied atop balanced no reason to be at at the Deutschland to afford to promptly ensue informatics of English to be at all and assume Deutschland dawned must've been forced so but again in the spirit in mind for class of bank is heightened by the Lions and Duchess not which would can also in on it is that which is that and we
talk about their LANs light has a multiple without and updating these but it was never looked in we did reach Management Institute and climate change so for with the Colombian so 1st of all the ads and we have the
contents of slicing what's on there too little of it is the first one is this a semiquantitative immigrationist of reading then I will talk about the natural slopes contrasting all maps sulfur and use cases epoch and results and the conclusion
1st a contents of landslides in but well if we
look at where Columbia is located conveys and and and OR particles in Latin America and then here is what what is in the middle of the country so some basic information of
what the height of people but that is about 260 2 thousand 600 meters is is located in it's and this there is studied area is about 16 thousand hectares and this is situated in a in the topic of combatants song their population exceeds a year 8 medium Sopheap habitants and here you see these these area this much and the area is the area that in this study covers because this is the area where demand times are Bennett
and Wiley in the last slice of cutie involve so we have a cocktail of
many factors that make that they not slice happened so the 1st is that the mountains have not to those this of to be the tool did due to them to morphology and then also their frequent Pacific and then we have to a make love climate change and being new not linear and also the bulletin cases is located in an intermediate air like it's on so what what amount times are prone to landslides but at Y and
denounced like a clue what what is what what is this problem what will happen here there are 3 different situations and you see that landslides in lensless the more important things and brain angle and material and the first one you see up look and then the forces that act in the block so the gravitational force the normal force as you force and its strength in the and students teachers strength so when these chair force these they smaller than this year's strength the block we looked more for but that would happen if the angle is the steep steeper as in the situation then s is the sheer force is equal to the shear strength then the block will move all when the wolf that would that for example this type of strong greater than broke we also and that in the 1st iteration that
Congolese steeper a that in the situation and then of course there a sheer force is much bigger than the issues stand and they would win move and then we we have announced like but that is not so these
problems that I already explained it there is also a source of problematic that we have been but whatever and then you know that there are many refugees not only from
all the countries but also from Venezuela now and they believe in so at such a risky sounds like you see here so that is a source of problematic we have isolated and this order if you run grows and people leave in area regions like you see like a really show so there is a human activity queries and his love of free streams in is is steep slopes songs and arms and here an important number 3 comma decimal 5 millions of people leaving the satirist keys songs and here you see for
example the situation is in is is is dangerous make you see this point is located in the western part of the Western so part of what what that induces this Veneman and this is considered the largest landslide friend of many new when areas also Latin America with these it spins 73 hectares of looks model and then here you see a crack of about 1 meter and the house he spotted in the half then
we we we talk about many many different factors that make it a necessity of land management plan updating of all the time and there was include the landslide and flooded maps updating and that was necessary to be finalized and due process the basic N a complex information so that music by accused what what our height 32 professionals to perform this project and was the use of open source that's flat in cool DAS grass insider these but it was not easy to to convince these people to use this this this self because at the beginning they wanted to buy IT software many have many new licenses and modules finally the just said that they accepted to do it like I suggested and then there was a training of open source so far they say fear about 90 thousand euros there how capacity was exploited because all people had installed these programs and then we have a good result salt they updated maps so the 1st the fact that their methodology semi-quantitative instability evaluation and then consist of cut the
goddess cytosine and weighting the factors that cause instability according to the influence of these in the last lecture so all that is the mean the rate that this is this sample all these factors that you see here so much even relieved drainage land use euros and climate in way and of course human factor is a very important aspect and I was showing you as studios all MOPS where it the best writing is represented in green and the wars is represented in red the heian radius that letter stability it's so
1st we have drainage and that I would not staying in out of the in so the tape each factor because that is not enough time that they're doing this was even write it like you see here the classification classification and ever itself and then these 2 variables were combined and then you see that the average snowfall drains the higher here and greatness density of course the if your heart so much water that is wars and then Here you see that there been rating these 6 so the elements in 6 of represent the the inbred lighting already is like and do you remember these their friend of mine that I talk about the largest landslide in Latin America this year is of ball 13 there rate for these sentiment and then thereby conditions and for these vitamins was not easy to tool have resulted because the limitability phase that you have to consider all these sons and all these slopes and after war you have to combine these 1st results with these sporophytes with this convex line oak concave so was not so easy to tool but from this viable and and then I use saga for this further these these I don't even want is is that race offers classification and algorithm and you combine then they makes you the the slope and the text of and if you compare these for the previous study and these the day it will be updated the study you see that here the views are more a much more a high level
of detail then there are the set
in vitamin was the material and like and then another another group of violence the this is the triggering factors and the user gives human human-factor ocean climate and as quick and for the human factor here again the largest human the largest a landslide in Latin America is the present that with about the great so we'd ocean and climate and climate is not about for this region for the largest in the last in Latin America and then an earthquake after wars you combine all these valuable
so the state variables are combined and they had our normal distribution and then there are 5 categories categories defined in a bid to be a high and very low pass of mobile and here this is is it is means that these this but has had a very high at the hospital level the settlement of
the energy is a little bit more complex
because his upper will be sticker methodology and then the basic principle raised their basic principles essays that they use are forming a measurements of high-speed meters and the corresponding lands in meters or bring a better tag rather lines in not high slope of homogeneous composition and audience and link it but the stick which so that is as this is a only that they height Elaine's in the high slope and related with the wishes but important to see here is that these the regions it should be a home genuine and and the compositions to the more generous and odious would be moment which also that 4 up nineties equation it was used their
means hi the logic of modeling and for doing this Gowers was used because it was necessary to define a small what is it's so if you're not here as a comparison between the results of Gomez sulfur and here for example if you see that they worked as you have done in sense it followed and not only in the land forms of the terrain because he's computer horizontal but if you see these there what it has then in that much better and then I use this state as sulfur so defined is that what the text and then
after wars he was necessary to find the height and length instant like these that you define the family is like ready show here so families of slows
I hear so many different look the slopes which have given in size
so here there is this is they they're funny and this is an envelope and here you that their metallurgists face that you have to find the distance between this point and this point this 1 and this 1 this 1 and this 1 and so on on for the 1st counter line enough of wars you have to find the distance between these and the next big cont line and so on until the whole family is cover so all this is not easy to find out there to do it modeling would be a horrible sound and the the probability of made mistakes that would be high so it was a sunny then they
have to have a lot to gain besides basic in it says and then here you see at table with the coordinates of X and Y and after wars the table is sorted that and that this in Spanish and that you have the the average they have the maximum and the meaning of for each contour like like I already is that after
was for the Society Japan a commodity and the I would not things here and there
results a detailed they safety factor and these categories were defined like in the previous mid-ability using a normal distribution
the contrasting of maps then you have
a tool positive results for the 1st
4 day of rest metallurgists and then he was used this smartest to to say what is the result when did is that they naturalist loss metallurgists and semi-quantitative motility and then was with many in many in combination of these these maps these 2 positive results liked you know more than without television is not good enough so all there was out the inventory of the processes and this process is how islands like the last like that that of all already OQ in book with them and then you have these in a table where they would be if the process is actually liberal abilities that high and so on so for calibrating these these mark was these processes where use instruments and the in
input from the these for this map and this in these in these is studied they last line of each look was this study and was include after wars in them up so at the end you have 2 components of the map so the 1st result is the combination of the 2 with the volunteer and then the processes the and there you have big landslide has a has a map of bulletin and the processes and the most important because in these processes like this thing you're getting all they last like they houses and then for example if the motility here say so that they have said is very low the process essays them their house that is the high the result would be very high software
unused cases so there were many
many issues because they amount of information was B was not so easy to tool deal with this information so for example as to match is more areas to at Jason ideas was used with being better factor would remove the small areas all to lead a sporty once was used it was solved with overlapping vector map the not operator Optane and digitally evasion model from conduct lines mystery was solved with interpolated surfaces all combination of their body once it was solved the overlapping up course most of these processes you can solve we up my so so far for example with this 1 when you use our case for doing these you have to do it 3 times and then at the time that you spend for doing this process is bigger these with and for example for these 1 bidets follicles is a simple process but you need the most expensive license of ideas for doing it for his more thing
was also used grass and for
auto-body it for topology fixing was used Of course yes in
the input and results then did is their map all the LANs like has able to end here you
see the 64 air % of the area is of medium outside it doesn't mean that all with that soul at Dundas you can be civil without so from this map a
news readable and as for housing
projects can to define so this is a very important being put in day at manifestation of this the this absence of freaks minus men depends on continuous monitoring with is not but it doesn't mean that lonesome fix because is said that is very dynamic the situation in what what I like to various plane an update of such a maps been important role in various management this is the 1st input for prevention
and you remember these the
largest allows light in you when areas in Latin America they make out 1 of about 200 meters and the was the society then relocation of 3 thousand findings the conclusions is that
in processing of a large
volumes of geographical information different alternatives should be explored of thin and when you when you find a beacon all that's what was of geographic information as as grass is very efficient the is a simplification of the reality that means that they would be by it was that they were not taken into account and then there's why is the society that more specific and this studies are executed by the addition of state map was used with the processes like a you're ready because in this process is they house that was already known
so that was my presentation
soldier decided this time you thank you very much for your presentation I have 1 question of who stated need land cover data and use data for your model so I think that you you need land use data on the on the modeling guess where did you take the data from from which sources to have the data I mean they were a combination of different things better and mainly was from will air so it was more often and there was also an input from an for an entity but this resolution was not so will sold it was not so detained because we need there is carried off and 5 thousand so many people will ever and now I'm asking because I think it's a very interesting development now we had yesterday the session a boat called the and Copernicus data and it's also an open-source approach and I think in the future we can use of open-source Juris and open-source remote sensing data to get data like for your problems in both land cover the bald eagle and and so on but the you tell us about how you validated your results from the model hold the validation however the results again the results I hear you validated the model using real of taught us you did something that yesterday that the model and the new validated the model using the real that I didn't take it in more than a hundred presses yes yes often how were the results of the renovation published the results their results of it the model was recorded by the Data Domain home yes it there were many many different area approaches because they were that they use the results of the previous study so the bruises that it was 20 years a goal to will what is on the the the amount that we have is not so it was also up update was not so current and then you we use many approaches on TV we find very depressed 1 and yet it they're Procious is is very very valuable more than in this country the following the kind of male and the density of mobile need to honor come over and I want to spend it so counterparts
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Metadaten

Formale Metadaten

Titel The landslide map of Bogota updating
Serientitel FOSSGIS Konferenz 2018: Bonn, 21. - 24. März 2018
Anzahl der Teile 95
Autor Zamora, Niny
Lizenz CC-Namensnennung 3.0 Unported:
Sie dürfen das Werk bzw. den Inhalt zu jedem legalen Zweck nutzen, verändern und in unveränderter oder veränderter Form vervielfältigen, verbreiten und öffentlich zugänglich machen, sofern Sie den Namen des Autors/Rechteinhabers in der von ihm festgelegten Weise nennen.
DOI 10.5446/36195
Herausgeber Chaos Computer Club e.V.
Erscheinungsjahr 2018
Sprache Englisch

Inhaltliche Metadaten

Fachgebiet Informatik
Abstract Erdrutsche stellen eine grosse Bedrohung für Bogota dar. Das starke städtische Wachstum, die steile Landschaft und die heftigen Regenfälle spielen eine wichtige Rolle. Die analysierte Fläche umfasste über 16000 Ha. Dies ergab ein sehr großes Datenvolumen, deshalb brauchte man effiziente und robuste Softwaretools. Deswegen war GRASS GIS das beste Tool um die diversen Geoprozesse durchzuführen. Die Ergebnisse dieses Modells werden in den nächsten 15 Jahren von der Stadtverwaltung Bogota genutzt um die Sicherheit ihrer Bürger zu gewährleisten.
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