[HOT] landslides

rubini santha ruby86santha at gmail.com
Thu May 14 08:21:56 UTC 2015


Hi all,
I am looking for landslide inventory for the recent earthquake event. Can
someone help with suitable pointers.
I appreciate the time and efforts invested by the entire team!

On Fri, May 8, 2015 at 12:38 AM, john o'l <ol.john.el at gmail.com> wrote:

> Some thoughts regarding landslides in OSM, as we may be dealing with them
> in upcoming days. It looks like there are some standards folks have used in
> the past that may apply, as in the following:
>
> http://wiki.openstreetmap.org/wiki/JA:2014_Tanba_landslide
>
> original:
> 災害関連タグリスト
> 土砂災害
>
> (Disaster related tags list
> Sediment disaster)
>
> hazard_prone = yes
> hazard_type = landslide
> landuse = brownfield
> natural = bare_rock
> surface = dirt
> source = xxxx
>
> Another resource mentioned their impact on roads:
> https://help.openstreetmap.org/questions/34076/tagging-highway-blocked-by-landslide
>
> And another appears to emphasize future hazards:
> http://wiki.openstreetmap.org/wiki/OpenHazardMap
>
> I propose an approach like this*:
>
> hazard_type = landslide
> landuse = brownfield
> area = scarp (for bare area where slide originates)
> area = deposit (for area where material comes to rest)
> barrier = deposit(?) or scarp (?) when path road or stream appears blocked
> adding these tags as per earlier instructions may be useful also:
> damage:event=nepal_earthquake_2015
> source=DigitalGlobe , 2015-05-03
>
> > rationale for specificity with barrier and areas is that scarp may be
> impassable for a much longer time than the deposition area.
> Also, fresh scarps are likely the most visible feature, as an example, a
> highly probable earthquake related scarp is visible in the DG imagery near
> 27.795 85.7786.  I can't confidently make out where the deposit is,
> though.  Nor can I tell if it blocks any paths or roads.
> Scarp appears little used in OSM, so it would be easy to pull out recent
> additions once people start actively mapping them -- and it is such a
> useful term.
> Many examples of mapped slides here:
> http://www.oregongeology.org/slido/index.html
>
> Cheers,
>
> John
>
> *experience level: noob
>
>
> _______________________________________________
> HOT mailing list
> HOT at openstreetmap.org
> https://lists.openstreetmap.org/listinfo/hot
>
>


-- 
Thanks,

Rubini.S
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstreetmap.org/pipermail/hot/attachments/20150514/82152210/attachment.html>


More information about the HOT mailing list