Ground-Based Digital Camera Photographs
![[Aerial Image Map]](ground/images/map.gif)
This aerial image map thumbnail shows the general area where the digital photographs were taken. |
Because of the lack of acceptable spatial resolution in the aerial photographs for detecting and monitoring erosion inside the small channels, we investigated the use of ground-based digital camera Color Infrared (CIR) and Natural Color (NC) photographs. The digital ground photos were collected at the baylands on three different occasions using a Kodak DCS 420/CIR digital camera that has a charge coupled device (CCD) imager with an array size of 1524 by 1012, and can take either a CIR or NC photograph. The main reason for the ground-based digital photos was to see how they might work to document some of the changes that were ring in and around the baylands, especially changes due to erosion inside the small drainage channels. Shown here are several of the multitemporal ground digital photographs that show some of the changes that occurred between the photo dates. As can be seen, much of the erosion in the channels is relatively small-scale and would be difficult to detect on aerial photographs having the scales of those available for this project. Field work with the digital camera was done 6 November 1997, 17 February 1998, and 27 April 1998. The dates for which ground-based digital camera CIR and NC photographs shown in this section are:
- 6 November 6 1997
- 27 April 1998
The photographs collected on 27 April 1998 show some of the effects of the winter El Nino rains. These photographs show that for erosional changes in the order of one foot or less, ground-based systematic photographs can help monitor these subtle changes.
Each page linked to the right displays two digital camera images.
Each image is 508 x 360 and approximately 150k.
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Remote Sensing in the Sonoma Baylands
