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- Shadow_marks abstract "Shadow marks are a form of archaeological feature visible from the air. Unlike cropmarks, frost marks and soil marks they require upstanding features to work and are therefore more commonly seen in the context of extant sites rather than previously undiscovered buried ones.They are caused by the differences in height on the ground produced by archaeological remains. In the case of ancient, eroded earthworks these differences are often small and they are most apparent when viewed from the air, when the sun is low in the sky. This causes long shadows to be cast by the higher features, which are illuminated from one side by the sun, with dark shadows marking hollows and depressions.Shadow marks are best viewed obliquely rather than from directly above in order to emphasise the effect of the shadows.Artificial shadow marks can be created easily by constructing a virtual 3D model of a site by merging aerial images (pole, kite etc) and then vectoring in a virtual light source. Such an applied lighting can be animated.".
- Shadow_marks thumbnail Kite_aerial_photo_the_site_of_Ogilface_Castle,_Woodend,_West_Lothian_in_low_sunlight.jpg?width=300.
- Shadow_marks wikiPageExternalLink kite03.htm.
- Shadow_marks wikiPageID "641244".
- Shadow_marks wikiPageRevisionID "568400965".
- Shadow_marks hasPhotoCollection Shadow_marks.
- Shadow_marks subject Category:Archaeological_features.
- Shadow_marks subject Category:Methods_and_principles_in_archaeology.
- Shadow_marks type Ability105616246.
- Shadow_marks type Abstraction100002137.
- Shadow_marks type ArchaeologicalFeatures.
- Shadow_marks type Cognition100023271.
- Shadow_marks type Concept105835747.
- Shadow_marks type Content105809192.
- Shadow_marks type Feature105849789.
- Shadow_marks type Idea105833840.
- Shadow_marks type Know-how105616786.
- Shadow_marks type Method105660268.
- Shadow_marks type MethodsAndPrinciplesInArchaeology.
- Shadow_marks type Property105849040.
- Shadow_marks type PsychologicalFeature100023100.
- Shadow_marks comment "Shadow marks are a form of archaeological feature visible from the air. Unlike cropmarks, frost marks and soil marks they require upstanding features to work and are therefore more commonly seen in the context of extant sites rather than previously undiscovered buried ones.They are caused by the differences in height on the ground produced by archaeological remains.".
- Shadow_marks label "Shadow marks".
- Shadow_marks label "Shadow marks".
- Shadow_marks sameAs Shadow_marks.
- Shadow_marks sameAs m.02zpyy.
- Shadow_marks sameAs Q3958959.
- Shadow_marks sameAs Q3958959.
- Shadow_marks sameAs Shadow_marks.
- Shadow_marks wasDerivedFrom Shadow_marks?oldid=568400965.
- Shadow_marks depiction Kite_aerial_photo_the_site_of_Ogilface_Castle,_Woodend,_West_Lothian_in_low_sunlight.jpg.
- Shadow_marks isPrimaryTopicOf Shadow_marks.
