|
| | Abstract | | The existence of a footprint fossil indicates that some discontinuity occurred at the footprint plane during sedimentation. Holographic radar reveals the plan shape of buried objects in shallow part. Basic experiment showed that a clod of loam soil buried in powdered loam soil appeared blur but was recognized in the radar image. Another basic experiment showed that a microscopic thin film layer inserted between base material also provides recognizable reflection. The minimum required layer thickness is rather smaller in larger contrast of permittivity. Finally blind tests were performed for realistic samples of dinosaur footprints. The radar image has no recognizable pattern in case of only microscopic air gap. However, when the air gap was replaced by very thin clay layer, the shape of the toes became recognizable. There may be some cases that some discontinuity during sedimentation makes the shape of a dinosaur footprint fossil recognizable by holographic radar. |
|
|
|
| |
|