RADARSAT-2 featured images archives in North America

Richelieu River Floods – One Year On

Map of St-Paul de l'Ile-aux-Noix, Richelieu, one year later.

This animation produced from RADARSAT-2 data shows the maximum (in red) and minimum extent of the flooding in a portion of the basin of the Richelieu River in 2011.

RADARSAT-2 Data Applications and Utilizations Providing Support in the Event of Natural Disasters

Minimum and maximum extents of a portion of the 2011 flooding

For a period of around 40 days between April and June 2011, heavy rain and the melting of a thick layer of snow in the area surrounding the Lake Champlain Basin and the Richelieu River caused water levels to rise substantially.

In Canada the floods affected approximately 3,000 principal residences in Quebec's Montérégie region. Municipalities primarily affected by the flooding include Venise en Québec, Noyan, Saint-Jean-sur-Richelieu, Henryville, Saint-Paul-de-l'Île-aux-Noix, Sainte-Anne-de-Sabrevois, Saint-Georges-de-Clarenceville and Saint-Armand. According to the Meteorological Service of Canada, the flooding was one of the most important meteorological events in Canada in 2011.

RADARSAT-2 images covering the period from April 11 to June 29, 2011, were used to develop products showing the extent of the flooding, thus providing support for Public Safety Canada's efforts in the field.

As part of a new disaster management initiative called Rapid Information Products and Services (RIPS), the (CSA)'s Earth Observation Applications and Utilizations Division worked closely with Public Safety Canada (PS) and Montreal firm Effigis Géo-Solutions to provide greater detail about the extent of the flooding, using Earth Observation data.

Earth Observation satellites such as RADARSAT-2 have become key resources when the need for more stringent flood management arises. The data are used to facilitate forecasting, intervention and the rehabilitation of affected areas.

Rights: RADARSAT-2 Data and Product© MDA (2012). All rights reserved. RADARSAT is an official trademark of the CSA. Data from the EO-1/ALI image were made public by the U.S. Geological Survey and distributed by the Land Processes Distributed Active Archive Center (LP DAAC) located at USGS/EROS, Sioux Falls, South Dakota. Effigis Géo-Solutions, the CSA and Public Safety Canada cannot be held responsible for the contents or use of these products.

Disclaimer: These products are for demonstration purposes only. The CSA is not responsible for the accuracy, reliability or currency of the information or services provided by external sources.

Flooding in New Brunswick

Location

Geographical Location ofs inondations au Nouveau-Brunswick on the World map.
Image 1 snowmelt and rainfall, Saint John, New Brunswick river.

RADARSAT-2 Data and Products © MDA (2008) - All Rights Reserved.

Image 2 snowmelt and rainfall, Saint John, New Brunswick river.

RADARSAT-2 Data and Products © MDA (2008) - All Rights Reserved.

Image 3 snowmelt and rainfall, Saint John, New Brunswick river.

Credit: CSA (2008)

Image 4 snowmelt and rainfall, Saint John, New Brunswick river.

Credit: CSA

[D]

Recent rains and melting snow caused the Saint John River in New Brunswick to overflow its banks. Roads were closed and a number of buildings flooded. On April 30, in response to this emergency, Public Safety Canada (PS) activated the International Charter "Space and Major Disasters" to ensure continued satellite surveillance of the flooding.

The advanced capabilities of RADARSAT-2 were used for the first time in an emergency context, and provided superior information. Using RADARSAT-1 and RADARSAT-2 together, the authorities can continuously receive critical images daily. This combining of two Canadian satellites demonstrates the advantages and potential offered by a constellation of multiple sensors for monitoring a specific site in an emergency situation.

For more information, please see the Charter site: www.disasterscharter.org/disasters/CALLID_201_e.html

Charte Internationale ‘Espace et Catastrophes Majeures' Activation #335, 24 Juin 2012 www.disasterscharter.org

Rights: The flood extent products are derived from RADARSAT-2 images with a system developed and operated by the Earth Sciences Sector of Natural Resources Canada (NRCan). Flood extent boundaries © NRCan. RADARSAT-2 Data and Products © MDA (2012) - All Rights Reserved. RADARSAT is an official mark of the CSA.

Disclaimer: These products are for demonstration purposes only. The CSA is not responsible for the accuracy, reliability or currency of the information or services provided by external sources.

Eruption of the Eyjafjallajökull volcano in Iceland as seen by RADARSAT-2

Here are two RADARSAT-2 images of the Eyjafjallajökull volcano acquired on April 9 and 20 2010. The first image was acquired before the eruption, the second, during the event. These images will be provided to the International Charter space and major disaster to help the civil protection services to better understand the situation.

Several observations can be made on the images:

  • A : New volcano craters are evident on April 20th image
  • B : The glacial lake on the north slope of the volcano is now filled with volcanic sediments
  • C : The local drainage network is strongly affected by the melt water
  • D : The radar backscatter has changed drastically, probably caused by the melted ice and by the presence of ash and dust on the ice
  • E : Agricultural farms on the south slope of the volcano are now covered by ash and dust.

Note: The wavelength used by RADARSAT-2 is very weakly affected by the cloud of ash and dust.

Map of eruption of the Eyjafjallajökull volcano in Iceland - Before.

RADARSAT-2 Data and Products © MDA (2008) – All Rights Reserved. RADARSAT is an official mark of the CSA.

Map of eruption of the Eyjafjallajökull volcano in Iceland - After.

RADARSAT-2 Data and Products © MDA (2008) – All Rights Reserved. RADARSAT is an official mark of the CSA.