Transport of SO2by explosive volcanism on Venus
نویسندگان
چکیده
منابع مشابه
Volcanism and Tectonics on Venus
We review recent developments in the study of volcanism and tectonics on Venus. Venus’s crust is basaltic, dry, and probably about 30 km thick. The mantle convects, giving rise to plumes, and has a similar composition and mean temperature (∼1300◦C), but a higher viscosity (∼1020 Pa s), than that of the Earth. Inferred melt generation rates constrain the lithospheric thickness to between 80 and ...
متن کاملThe history of volcanism on Venus
Completion of a global geological map of Venus has provided documentation of the relative age relationships, spatial distribution, and topographic configuration of the major geologic units and permitted us to address several important problems concerning the volcanic history of Venus. We use these data to: 1) assess the stratigraphic position of volcanic units and landforms, 2) determine their ...
متن کاملMechanisms for Lithospheric Heat Transport on Venus: Implications for Tectonic Style and Volcanism
The tectonic and volcanic characteristics of the surface of Venus are poorly known, but these characteristics must be closely related to the mechanism by which Venus rids itself of internal heat. On the other solid planets and satellites of the solar system, lithospheric heat [ransport is dominated by one of three mechanisms: (1) plate recycling, (2) lithospheric conduction, and (3) hot spot vo...
متن کاملExplosive Volcanism on Hecates Tholus, Mars' Investigation of Eruption Conditions
Evidence is presented supporting the identification of a discrete, well-preserved air fall deposit generated by explosive volcanism on Mars. The deposit is located immediately to the west of the summit caldera of Hecates Tholus (32øN, 209øW), the northernmost of the three volcanic constructs in the Elysium Planitia region. The absence of superposed impact craters larger than the resolution limi...
متن کاملPresent‐Day Volcanism on Venus: Evidence from Microwave Radiometry
[1] We present new evidence for volcanic eruptions and lava flow emplacement on Venus within the last several decades. An integrated study of a radar‐dark lava flow unit in Bereghinia Planitia on Venus (∼28°E, ∼39°N) based on Magellan data obtained in 1993 reveals a significant apparent microwave thermal emission excess, consistent with increased subsurface temperature due to very recent lava f...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Planets
سال: 1999
ISSN: 0148-0227
DOI: 10.1029/1998je000619