Mostrar el registro sencillo del ítem Vierinen, Juha Tveito, Torbjørn Gustavsson, Björn Kesaraju, Saiveena Milla, Marco 2018-08-06T18:12:46Z 2018-08-06T18:12:46Z 2017-11
dc.identifier.citation Vierinen, J., Tveito, T., Gustavsson, B., Kesaraju, S., & Milla, M. (2017). Radar images of the Moon at 6-meter wavelength.==$Icarus, 297,$==179-188. es_ES
dc.identifier.govdoc index-oti2018
dc.description.abstract We present new range-Doppler images of the Moon using 6-mwavelength. The radar images were obtained using the Jicamarca Radio Observatory 49.92  MHz radar. The observations were performed using circular polarization on transmit and two orthogonal linear polarizations on receive, allowing scattering images to be obtained with the polarization matched to the transmitted wave (polarized), and at a polarization orthogonal to the transmitted wave (depolarized). Due to the long wavelength that penetrates efficiently into the subsurface of the Moon, the radar images are especially useful for studies of subsurface composition. Two antenna interferometry on receive was used to remove the Doppler north-south ambiguity. The images have approximately 10  km resolution in range 20  km resolution in Doppler, allowing many large scale features, including maria, terrae, and impact craters to be identified. Strong depolarized return is observed from relatively new larger impact craters with large breccia and shallow regolith. Terrae regions with less lossy surface material also appear brighter in both depolarized and polarized images. A large region in the area near the Mare Orientale impact basin has overall higher than mean radar backscatter in both polarized and depolaried returns, indicating higher than average presence of relatively newly formed large breccia in this region. Mare regions are characterized by lower polarized and depolarized return, indicating that there is higher loss of the radio wave in the subsurface, reducing the echo. We also report unexpected low polarized and depolarized backscatter from an old impact basin in the Schiller–Schickard region, as well as from the region poleward from Mare Imbrium. es_ES
dc.format application/pdf es_ES
dc.language.iso eng es_ES
dc.publisher Elsevier es_ES
dc.relation.ispartof urn:issn:0019-1035
dc.rights info:eu-repo/semantics/restrictedAccess es_ES
dc.subject Moon es_ES
dc.subject Synthetic aperture radar es_ES
dc.subject Doppler effect es_ES
dc.title Radar images of the Moon at 6-meter wavelength es_ES
dc.type info:eu-repo/semantics/article es_ES
dc.subject.ocde es_ES
dc.identifier.journal Icarus es_ES
dc.description.peer-review Por pares es_ES
dc.identifier.doi es_ES




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