University of Cambridge > > Isaac Newton Institute Seminar Series > Influence of mantle melting on cooling and volatile cycling

Influence of mantle melting on cooling and volatile cycling

Add to your list(s) Download to your calendar using vCal

If you have a question about this talk, please contact INI IT.

MIMW01 - From foundations to state-of-the-art in magma/mantle dynamics

Heat lost by melt eruption at the surface is a minor component of Earth’s internal heat budget and normally discarded from thermal history models. However, the strong temperature dependence of global melt production implies that an earlier, hotter Earth produced more melt, increasing internal heat loss via eruptive cooling. To address this we develop simple models for mantle melt production and eruptive cooling, and derive melt heat loss scaling laws. Including a melt heat sink in thermal history models results in more efficient mantle cooling, exacerbating the thermal catastrophe of the mantle, which can be overcome by adjustments to the present-day energy balance. In application to stagnant lid planets, cooling by melt eruption can compensate for slow conductive cooling but is dependent on the fraction of extrusive to intrusive melt. In the same vein, a generalized volatile cycling box-model illustrates how volatile reservoir size depends on melt eruption rates.

This talk is part of the Isaac Newton Institute Seminar Series series.

Tell a friend about this talk:

This talk is included in these lists:

Note that ex-directory lists are not shown.


© 2006-2024, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity