An illustration of Positive and Negative crop marks. Source (Kent Aerial Photography)

An illustration of Positive and Negative crop marks. Source (Kent Aerial Photography)

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In recent years remote sensing has become one of the most frequently used techniques in archaeology. As a modern technology, its history rooted in the 19th century, fundamentally to record the landscape and its structures through remote sensing photography system. With its various techniques in the field of archaeology, remote sensing offers the ra...

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... crops color and the speed with their height can be affected by buried features to which they grow. Crop marks can be either classified as positive or negative (Fig. 5). A positive crop marks means that growth and lushness of vegetation traces is the evidence of that, soil nourishment is higher than its normal surrounding environment. Positive marks are more noticeable when the ditch is large and deep. Negative crop marks, a rare occurrence, are shown by an abnormally stunted or even killed ...

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