“snowfall” in earth’s core and the nature of the inner-core boundary jeffrey pigott –...
DESCRIPTION
Nov 2010 Equations of state, melting curves, compositional gradients Project still broadly defined in terms of interdisciplinary aspect MP meeting (Ann Arbor)/2010 Fall AGUTRANSCRIPT
![Page 1: “Snowfall” in Earth’s core and the nature of the inner-core boundary Jeffrey Pigott – Mineral Physics (Ohio State) Jackie Li – Mineral Physics (U of Michigan)](https://reader036.vdocuments.site/reader036/viewer/2022062504/5a4d1b397f8b9ab05999dea2/html5/thumbnails/1.jpg)
“Snowfall” in Earth’s core and the natureof the inner-core boundary
Jeffrey Pigott – Mineral Physics (Ohio State) Jackie Li – Mineral Physics (U of Michigan)Bin Chen – Mineral Physics ( U of Michigan)Matt Armentrout – Mineral Physics (UCLA)
Antonio Buono – Mineral Physics (MIT)John Hernlund – Geodynamics (UC-Berkeley)Jodi Gaeman – Geodynamics (U of Maryland)
Lauren Waszek – Seismology (Cambridge)
![Page 2: “Snowfall” in Earth’s core and the nature of the inner-core boundary Jeffrey Pigott – Mineral Physics (Ohio State) Jackie Li – Mineral Physics (U of Michigan)](https://reader036.vdocuments.site/reader036/viewer/2022062504/5a4d1b397f8b9ab05999dea2/html5/thumbnails/2.jpg)
CIDER 2010 - KITP
Outer Core
Inner Core
F-layer
PREMAK135PREM2
Zou et al., 2008 (JGR)
Chen et al., 2008 (GRL)Hauck et al., 2006 (JGR)
![Page 3: “Snowfall” in Earth’s core and the nature of the inner-core boundary Jeffrey Pigott – Mineral Physics (Ohio State) Jackie Li – Mineral Physics (U of Michigan)](https://reader036.vdocuments.site/reader036/viewer/2022062504/5a4d1b397f8b9ab05999dea2/html5/thumbnails/3.jpg)
Nov 2010 Equations of state,
melting curves, compositional gradients
Project still broadly defined in terms of interdisciplinary aspect
MP meeting (Ann Arbor)/2010 Fall AGU
![Page 4: “Snowfall” in Earth’s core and the nature of the inner-core boundary Jeffrey Pigott – Mineral Physics (Ohio State) Jackie Li – Mineral Physics (U of Michigan)](https://reader036.vdocuments.site/reader036/viewer/2022062504/5a4d1b397f8b9ab05999dea2/html5/thumbnails/4.jpg)
MP meeting (Ann Arbor, Nov 2011) Parameter space for
“snowing” using seismic, experimental, and theoretical constraints Snowing – Fe-S, Fe-C?,
Fe-Si? No snow – Pure Fe, Fe-
H, likely Fe-C and Fe-Si
Relationship between melting curve and adiabat
Can solid/liquid fraction account for Vp gradient?
Top
of F
-laye
r
![Page 5: “Snowfall” in Earth’s core and the nature of the inner-core boundary Jeffrey Pigott – Mineral Physics (Ohio State) Jackie Li – Mineral Physics (U of Michigan)](https://reader036.vdocuments.site/reader036/viewer/2022062504/5a4d1b397f8b9ab05999dea2/html5/thumbnails/5.jpg)
Geodynamics
Evolution of thermal, compositonal, and structural profiles with time
Stability of F-layer
Origin of stratified layer
![Page 6: “Snowfall” in Earth’s core and the nature of the inner-core boundary Jeffrey Pigott – Mineral Physics (Ohio State) Jackie Li – Mineral Physics (U of Michigan)](https://reader036.vdocuments.site/reader036/viewer/2022062504/5a4d1b397f8b9ab05999dea2/html5/thumbnails/6.jpg)
Comments and Suggestions
Defined leadership role
Positives Easy exchange among different disciplines at CIDER Helpful interaction within MP sub-group
Collaboration that otherwise would not have occurred
Negatives Difficulty following up with interdisciplinary communication
Short (~3-5 day) semi-annual workshops for established groups Difficulty generating a concrete product
Viewed as a “side-project”