Possible Deep Structure and Composition of Venus With Respect to the Current Knowledge From Geodetic Data
نویسندگان
چکیده
Almost no in situ seismic data are available for Venus; therefore, we can constrain the deep structure of this planet only from geodetic obtained by spacecraft. Of particular interest is Venus’s core-mantle boundary, which holds clues about origin and evolution celestial body. In study, build a series different mantle/core models Venus based on several mantle composition compare their associated Love numbers k2 with observed values. Due to large uncertainty values k2, state core cannot be reliably constrained. However, expected precision EnVision mission will sufficiently reduce acceptable model space contribute estimating viscosity structure. Based current data, find that bottom may not feature phase transition perovskite post-perovskite if FeO content less than 8.1 wt%; region Earth’s D” layer. Furthermore, combination Q used distinguish whether lowermost part high-temperature basalt layer or thin thermal boundary observations obtained.
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ژورنال
عنوان ژورنال: Journal Of Geophysical Research: Planets
سال: 2021
ISSN: ['2169-9100', '2169-9097']
DOI: https://doi.org/10.1029/2019je006243