Comparative series of images: North Polar Plain active jet area

This is a comparative series of NavCam images centered on a feature informally named "The North Polar Plain" located near 90 degrees latitude. It is centered on the area suspected to be the source of the prominent collimated dust jet. The line of "boulders" is informally known as "The Necklace".

Source: ESA/ROSETTA

North Polar Plain closeup of active jet area

OSIRIS and Navcam Images of Landing Site J

A comparison of a 20 August 14 OSIRIS image and a 30 September 14 Navcam image of Primary Landing Site J, with key landmarks labeled.

Jet vent activity on North Polar Plain

Comparison of vent activity 24 Sept 14 to 2 Oct 14

Comparative series of images for "Equatorial Plain"

This is an updated comparative series of images centered on a feature informally named "The Equatorial Plain" located near 0 degrees longitude on the large sphere of the comet. It shows this feature on the dates of 6 August, 13 August, 15 August, 23 August, 7 September 14 and 8 October 14 with the OSIRIS imager or the NavCam. The images are presented in a similar scale of 1 meter per pixel and with a similar orientation.

Comparison: "The Ampitheater"

Comparative image series of the topographic feature informally known as "The Ampitheater" August 2014 - October 2014

Comparison of Recent image on "Equatorial Plain" with earlier images

Comparison of 26 Oct 14 Navcam with 13 Aug, 15 Aug and 23 Aug 14 images

Comparison of Vents near Site J with recent imagery

The ESA Press briefing on 15 Sep14 mentioned possible vents near Site J.
I have been following these with the hope of detecting changes, but nothing, within the resolution of the imagery,
has been seen.

The first of "Ten at 10" series of images happens to show this study area at a distance of 9.9 Km and a scale of 0.6 M/pixel. In this image, the scalloped surface to the right of the lefthand vent may be a deflationary feature caused by gas outflow. We'll know more as time goes on because the comet can only get more active.

I have incorporated this image with some earlier images of the comparative series, including one cross-eyed OSIRIS stereo pair.

Image Sources: ESA/Rosetta/NAVCAM/OSIRIS
CC: BY-SA IGO 3.0

Processing by Bill Harris

Comparison of West Side of North Polar Plain

Comparison of Navcam Images from 19 Sept, 18 Oct, 24 Oct and 20 Nov 2014 of an area on the western side of the North Polar Plain.
The scale is approximately 0.65 m/pixel.


Source: ESA/Rosetta/NAVCAM
CC: BY-SA IGO 3.0

Jet vent activity on North Polar Plain

Comparison of vent activity 24 Sept 14 to 2 Oct 14 and 9 Dec 14


Source: ESA/Rosetta/NAVCAM
CC: BY-SA IGO 3.0

Changes in Surface Due to Dust Jet Activity on North Polar Plain

2 October 14 and 9 Dec 14 Navcams

Source: ESA/Rosetta/NAVCAM
CC: BY-SA IGO 3.0

Changes in Surface on North Polar Plain Due to Dust Jet and Mass-Wasting Processes

20 October 14 and 9 Dec 14 Navcams

Source: ESA/Rosetta/NAVCAM
CC: BY-SA IGO 3.0

Dust Jet Vent Activity on North Polar Plain

Comparison of vent activity 24 Sept 14, 2 Oct 14, 9 Dec 14 and 10 Dec 14

Source: ESA/Rosetta/NAVCAM
CC: BY-SA IGO 3.0

Comparative montage of Images on the "Equatorial Plain" of the Larger Lobe

Comparison of 26 Oct 14 Navcam image with 14 Dec 14 Navcam image.
Scale approximately 0.65 m/pixel

Image Source: ESA/Rosetta
CC: BY-SA IGO 3.0
Processing by Bill Harris

Comparison of West Side of North Polar Plain

Comparison of Navcam Images on 24 Oct 2014 and on 1 Jan 2015 of an area on the western side of the North Polar Plain.

The scale is adjusted to approximately 0.65 m/pixel.

Source: ESA/Rosetta/NAVCAM
CC: BY-SA IGO 3.0

Comparison of Imhotep Plain images

A comparison of the Imhotep (informally named "Equatorial") Plain of the Larger Lobe: OSIRIS image 6 August 2014 and NAVCAM image 3 January 2015. Note that there are differences in the lighting angles and viewing geometries. The scale is adjusted to approximately 2.5 m/Pixel.

Source: ESA/Rosetta/OSIRIS/NAVCAM
CC: BY-SA IGO 3.0

Comparison of Navcam Montages

Images of 26 Nov 14 and 6 Jan 15

Comparison: "The Ampitheater"

Comparative image series of the topographic feature informally known as "The Ampitheater" August 2014 - January 2015

Source: ESA/Rosetta/NAVCAM
CC: BY-SA IGO 3.0

Changes in Surface Due to Dust Jet Activity on North Polar Plain

20 October, 9 Dec 14 and 8 Jan 15 Navcams

Source: ESA/Rosetta/NAVCAM
CC: BY-SA IGO 3.0

Jet vent activity on North Polar Plain

Comparison of vent activity 24 Sept 14, 2 Oct 14, 9 Dec 14 and 8 Jan 15

Source: ESA/Rosetta/NAVCAM
CC: BY-SA IGO 3.0