Orienting Yourself in the Imagery


I always find a lot of initial time dealing with satellite imagery is spent simply trying to orient yourself and fine important features. The following is a copy of an email I recently sent describing how to find important places within the images -- you should have the 2002 and 1986 9/60 preview images on hand, and the ability to zoom in or out (any graphics program will allow this):


To start with, the big river in the middle is the Rio Napo. Where it splits near the western part of the image, you can see the town of Coca (kinda grey area with some yellow pixels). In the top left hand corner is a huge oil palm plantation. The big north/south road going through the forest in the west from Coca is the Via Auca (look at the 1986 image, the one that goes all the way to the bottom is the Auca, the two to the east and west of it are newer roads).

The Via Pompeya Sur Iro was constructed around 1993, so you won't see it in the 1986 image. In the 2002 image however it is quite clear. Travel east along the Napo until you see an oddly shaped lake just north of it a little over the halfway point in the image (it looks a bit like a mouse, tail and all). If you look south across the river you will see the road that goes through the Yasuni National Park. The cleared area just south of the Napo is the town of Pompeya Sur. Zoom in on this road so you can see all the pixels. You will see a river not far south along the road (the Rio Indillama), then a long stretch of road without any major rivers (but lots of new farms) until you get to the Tiputini River about halfway between the Napo and the bottom of the image. This is the beginning of the Huaorani territory (you can see the Huaorani town just across the river). As you go farther south along the road you come to a fork. The eastern fork takes you past a big clearing (the YPF northern petroleum facility -- this is where the kidnappings took place a year or so ago). Keep travelling east along the road to where it kinks up right near the Tiputini River again. This 2nd clearing is the Estacion Cientifica Yasuni (ECY). If you travel west, back to that fork in the road and head south again, you'll come to a 2nd fork. If you travel NW on this fork you come to an oil platform, and this is where Tony Di Fiore (at NYU's) Projecto Primates site is.

The Tiputini Biodiversity station is not on this image, but it is on the image immediately to the east of this, along the Tiputini River.

Hope this helps!