HazMapper

October flood woes along the #Niger and #Benue Rivers is clearly visible using #Sentinel2 imagery and the @HazMapper #rdNDVI algorithm. Contiguous red areas = loss of vegetation during #NigeriaFloods inundation. Explore yourself with the direct URL at #lon=7.005157562197417;lat=7.927958595372147;zoom=11;dataset=0;prewindow=3;postwindow=1;maxCloudCover=0;slopeThreshold=0;eventDate=20221011" target="_blank" rel="nofollow noopener">cmscheip.users.earthengine.app/view/hazmapper…;

For those following the Oct 8-9 Las Tejerías landslide disaster in Venezuela, the @HazMapper +rdNDVI output clearly shows the shallow landslides and debris flows. Explore in HazMapper at #lon=-67.15955779554004;lat=10.282896965209492;zoom=14;dataset=0;prewindow=0.5;postwindow=0.5;maxCloudCover=0;slopeThreshold=0;eventDate=20221009" target="_blank" rel="nofollow noopener">cmscheip.users.earthengine.app/view/hazmapper…; and see @davepetley blog post-blogs.agu.org/landslideblog/…

@stress_driven Hey Kerry, very cool image! And awesome images throughout that report. We may offer a WMS link in the future, though a few details to work out, mainly regarding how long the image services stay active without being reinitiated. Cheers.

A quick comparison of mapping landslides (August 2021 Nippes EQ in #Haiti) in the original HazMapper compared to the beta v1.1 which includes moving from TOA to SR Sentinel data and some additional cloud filtering techniques. #googleearthengine #gee #bigdata #naturalhazards

The rdNDVI metric is also useful for identifying vegetative stress from #flooding. Very cool to see researchers implement HazMapper for a flooding study in Afghanistan! Recent article from Atefi and Miura. Good stuff!! researchgate.net/publication/36…

Lots of #debrisflows initiating on the high topography around Emamzadeh Davod last week. A cloud is right over town in the latest #Sentinal2 image but still can see the track via link below. You'll see many more panning to the NW #lon=51.31129026314665;lat=35.86079316661601;zoom=14;dataset=0;prewindow=1;postwindow=1;maxCloudCover=100;slopeThreshold=0;eventDate=20220727" target="_blank" rel="nofollow noopener">cmscheip.users.earthengine.app/view/hazmapper…;

When you’re trying to find the location of a vaguely described landslide and @HazMapper comes to the rescue to find it. Recent landslide in Quebec.

HazMapper Weekly Update #22 - April 2022 flooding and minor landsliding along the Mlazi (uMalzi) River, on the suburban fringe of Durban, South Africa.

Check out the @HazMapper pre-post GIF of the August 7, 2021, rainfall-induced landslide on Mt. Silabaku, Taiwan, and the resulting debris flow along the Yusui Stream. Inspiration from the new paper in the journal #Landslides by Che-Ming Yang and coauthors doi.org/10.1007/s10346…

Another large fire in New Mexico, this time the 100,000+ acre combined #CalfCanyonFire and #HermitsPeakFire, seen here as of April 28th #rdNDVI vegetation change map (reds = veg loss due to fire). Explore in @HazMapper at direct URL: #lon=-105.35123699795759;lat=35.82236514383138;zoom=12;dataset=0;prewindow=1;postwindow=1;maxCloudCover=30;slopeThreshold=0;eventDate=20220428" target="_blank" rel="nofollow noopener">cmscheip.users.earthengine.app/view/hazmapper…; @inciweb @SantafeNF

@HazMapper fire intensity proxy (#ndvi) map for the #McBrideFire near #Ruidoso, #NewMexico as of April 12, 2022, using #Sentinel2 imagery and #EarthEngine. The fire has caused several fatalities and destroyed more than 200 homes. Direct Hazmapper URL:#lon=-105.62352395066138;lat=33.36313296453466;zoom=13;dataset=0;prewindow=0.5;postwindow=1;maxCloudCover=30;slopeThreshold=0;eventDate=20220412" target="_blank" rel="nofollow noopener">cmscheip.users.earthengine.app/view/hazmapper…;

@HazMapper #NDVI change-detection result for the ongoing March #wildfires in central #Texas that are part of the #EastlandComplex. Fires are located between the cities of Cross Plains and Gorman. Warm colors = vegetation loss due to fire activity. @inciweb @TDEM

Direct @HazMapper URL: #lon=29.121857125050745;lat=-3.346086097209572;zoom=14;dataset=0;prewindow=4;postwindow=3;maxCloudCover=0;slopeThreshold=0.01;eventDate=20200416" target="_blank" rel="nofollow noopener">cmscheip.users.earthengine.app/view/hazmapper…;

April 2020, heavy rains triggered hundreds of landslides along the rift-flank mountains west of Lake Tanganyika. Resulting debris flows and floods caused substantial damage in #Uvia #DRC. @HazMapper #rdNDVI image is a nice example of #SourceToSink sediment transport.

One year on from significant #landslide and debris flow events in Quang Tri Province, #Vietnam caused by the consecutive passage of multiple tropical cyclones. Explore with @HazMapper URL: #lon=106.64125887508882;lat=16.795856050048776;zoom=14;dataset=0;prewindow=12;postwindow=12;maxCloudCover=0;slopeThreshold=0.01;eventDate=20201018" target="_blank" rel="nofollow noopener">cmscheip.users.earthengine.app/view/hazmapper…;

@HazMapper direct URL for event: #lon=-75.26567506385283;lat=6.587431721041725;zoom=15;dataset=0;prewindow=3.5;postwindow=1.5;maxCloudCover=100;slopeThreshold=0;eventDate=20210601" target="_blank" rel="nofollow noopener">cmscheip.users.earthengine.app/view/hazmapper…;

June 2021 #DebrisFlow and flooding near Santa Rosa de Osos, Antioquia, #Columbia. Red colors show vegetation loss due to transport and deposition of material on debris fan where the village is situated. #NaturalHazards #GEE #sentinel2

@HazMapper #rdNDVI result for May 2021 Mt. Nyiragongo lava flows, #DRCongo. Unfortunately, these resulted in the loss of life and destruction of > 1000 homes north of #Goma. Explore with the direct URL: #lon=29.249895346566294;lat=-1.5854924734731093;zoom=13;dataset=0;prewindow=12;postwindow=6;maxCloudCover=0;slopeThreshold=0.01;eventDate=20210527" target="_blank" rel="nofollow noopener">cmscheip.users.earthengine.app/view/hazmapper…;

And here is the direct URL for the @HazMapper #rdNDVI change result for the June 2020 outburst flood in the vicinity of #Melamchi #Nepal. #lon=85.57566126798963;lat=27.830221038158193;zoom=16;dataset=0;prewindow=12;postwindow=5;maxCloudCover=0;slopeThreshold=0;eventDate=20210614" target="_blank" rel="nofollow noopener">cmscheip.users.earthengine.app/view/hazmapper…;

Here is the direct URL for the @HazMapper #rdNDVI change result for the June 2020 river-blocking landslide near Melamchigaon village, #Nepal. #lon=85.53324262545496;lat=28.021097117529255;zoom=17;dataset=0;prewindow=12;postwindow=3;maxCloudCover=0;slopeThreshold=0;eventDate=20210614" target="_blank" rel="nofollow noopener">cmscheip.users.earthengine.app/view/hazmapper…

In June 2021, a ~500 m wide landslide temporarily blocked the Melamchi River of Nepal. The #Outburst flood caused significant damage and loss of life ~25 km downstream in the town of #Melamchi; @nepalflyinglabs. Explore the event via @HazMapper direct URL #lon=85.53149410765064;lat=27.931032205761483;zoom=12;dataset=0;prewindow=12;postwindow=5;maxCloudCover=0;slopeThreshold=0;eventDate=20210614" target="_blank" rel="nofollow noopener">cmscheip.users.earthengine.app/view/hazmapper…