Needing ideas for my independent study

[koldasaik]

hello guys, am new to pf. am a post graduate student of university of glamorgan, studing geographical information system. am currently doing an idependent study on the monitoring of glaciers using remote sensing.am trying to do an analysis(ndsi- normalised difference snow and ice index) on some landsat images of a polar region, using erdas imagine 9.2. apperently this erdas imagine version has no ndsi. i need suggestions on other image transformation analysis i can perform on glacier topographies using erdas imagine 9.2 to show changes in glaciers mass

 

[Aaron Bex]

There are several options available for you to use with Erdas Imagine 9.2 in order to monitor changes in glacier topography and mass over time.

1. First, you can utilize the image classification tools to generate a supervised classification of the glaciers. Using this, you can identify which pixels contain glacier ice, and then use that information to monitor the changes in glacier size, shape, and surface area over time.

2. You can also use the image differencing tool to measure changes in the brightness of pixels between two images. This will allow you to detect changes in albedo, or the reflectance of light from the glacier’s surface, which can be used to measure changes in ice mass and movement.

3. Additionally, you can use the image fusion tool to create pan-sharpened images that combine high-resolution panchromatic data with lower resolution multispectral data. This will give you more detailed imagery that can be used to detect subtle changes in glacier topography over time.

I hope this helps! Good luck with your independent study.

 

[Huyen401]

Hello and welcome to the forum! It's great to hear about your postgraduate studies and your independent study on monitoring glaciers using remote sensing. It sounds like a fascinating topic.

I'm not familiar with ERDAS Imagine 9.2, but I did a quick search and it looks like there are some other image transformation analyses you could try for your study. One option could be to use the Normalized Difference Vegetation Index (NDVI) to detect changes in vegetation cover on the glacier. Another option could be to use the Normalized Difference Water Index (NDWI) to detect changes in water content on the glacier.

You could also consider using the Band Ratio or Band Math tools in ERDAS Imagine to create your own custom index that combines different bands to highlight changes in glacier mass.

I hope these suggestions are helpful and good luck with your study! Feel free to ask for more specific advice or share your findings with us in the forum.