Observations made shortly after Rosetta’s arrival at its target comet in 2014 have provided definitive confirmation of the presence of water ice.
Tag: image
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New Seafloor Map Helps Scientists Find New Features
An international scientific team recently published a new map of the ocean floor based on Earth’s gravity field, and it is a particularly useful tool. The maps were created through computer analysis and modeling of new satellite data from ESA’s CryoSat-2 and from the NASA-CNES Jason-1, as well as older data from missions flown in the 1980s and 90s.
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DG media briefing
Watch media briefing with ESA Director General Jan Woerner on Friday 15 December, from ESA headquarters. Streaming starts at 09:00 CET -
Tim Peake Prepares For Friday's Spacewalk
European Space Agency (ESA) astronaut Tim Peake (@astro_timpeake) shared this photo taken aboard the International Space Station on Jan. 11, 2015, during preparations for a spacewalk, or extra-vehicular activity (EVA). Peake wrote, “Final suit fit check prior to Friday’s EVA – feels just great! #Principia #spacewalk”
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Testing LISA Pathfinder
While the spacecraft is en route to its operational orbit, scientists and engineers are checking that everything on LISA Pathfinder is working well. Watch how they trained for that -
Launch tower
Human spaceflight and robotic exploration image of the week: Inside a rocket launch tower in Sweden -
Starburst Spider
Mars’ seasonal cap of carbon dioxide ice has eroded many beautiful terrains as it sublimates (goes directly from ice to vapor) every spring. In the region where the High Resolution Imaging Science Experiment (HiRISE) camera on NASA’s Mars Reconnaissance Orbiter took this image on Feb. 4, 2009, we see troughs that form a starburst pattern.
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Making a mirror
The James Webb Space Telescope is rapidly taking shape, with 12 of the 18 mirror segments now installed -
Dark pools on Titan
Space Science Image of the Week: Cassini–Huygens has discovered much about Saturn’s moon Titan, including pools of liquid methane and ethane on its surface -
Hubble Sees a Supermassive and Super-hungry Galaxy
This NASA/ESA Hubble Space Telescope image shows the spiral galaxy NGC 4845, located over 65 million light-years away in the constellation of Virgo (The Virgin). The galaxy’s orientation clearly reveals the galaxy’s striking spiral structure: a flat and dust-mottled disk surrounding a bright galactic bulge.
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[Earth Observation Research Center (EORC)] ALOS-2/PALSAR-2 Observation Results of Flooding on the Mississippi River
ALOS-2/PALSAR-2 Observation Results of Flooding on the Mississippi River
Corresponding to emergency requests from NASA and the International Charter of Space and Major Disasters for flooding of the Mississippi River, the Japan Aerospace Exploration Agency (JAXA) performed an emergency observation over the area shown in figure 1 by means of the Phased Array type L-band Synthetic Aperture Radar-2 (PALSAR-2) aboard the Advanced Land Observing Satellite-2 (ALOS-2, “DAICHI-2”) on January 6, 2016.
Figure 2 is an interactive comparison of the post-disaster image on Jan. 6, 2016 and a pre-disaster image on Sep. 30, 2015. Both images are acquired by high-resolution 10m mode.
Fig.1: Observation area of the PALSAR-2 on January 6, 2016 (Red box).
(Click to view enlarged image)
Fig.2: Interactive comparison of images before and after flooding (HH polarization)* Drag a slider over the image or click on the arbitrary position of the image to compare the images. Required browser: IE9 or later, Safari5.1 or later, Chrome, Firefox or Opera.
Figure 3 is the flood map obtained by change detection of the observation images. Blue area is considered to be covered with water but also contains normal seasonal change of agriculture fields. Red is inundation area under forests.
Fig.3: Estimated inundation map on Jan 6, 2016
(Click to view enlarged image)KMZ File is here
© JAXA EORC
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