The “Deep Biosphere” Cesium globe presents an insight into the extreme conditions that life has adapted to on Earth. Based on the findings of researchers from the Deep Carbon Observatory, the temperature limit for life has been demonstrated to be ~120°C. Based on this, and combined with Earth’s topography (ETOPO1; Amante et al. 2009) and expected geotherms in continental and oceanic crust (Hamza et al., 2008), Robert Pockalny has developed iso-surfaces that represent this descent in depth towards the limit of biological processes. The globe is also superimposed with a database (including many sites from Magnabosco et al., 2018) of points (black circles on continents, and white triangles over oceanic crust) of sample locations that document the biological material that was collected.

Follow these links for more information about the “Deep Biosphere”:
https://deepcarbon.net/life-deep-earth-totals-15-23-billion-tonnes-carbon
https://en.wikipedia.org/wiki/Deep_biosphere

Contributors:
Robert Pockalny (Uni of Rhode Island), Sabin Zahirovic (Uni of Sydney), Michael Chin a.k.a Xiaodong Qin (Uni of Sydney), Rick Colwell (Oregon State University), Darlene Trew Crist (DCO), Katie Pratt (DCO), Josh Wood (DCO)

View Biosphere Map on 3D Globe

Reference:

• Amante, C., Eakins, B., and Boulder, C., 2009, "ETOPO1 1 arc-minute global relief model: Procedures, data sources and analysis." NOAA Technical Memorandum.
• Hamza, V. M., R. R. Cardoso, and CF Ponte Neto. "Spherical harmonic analysis of earth’s conductive heat flow." International Journal of Earth Sciences 97.2 (2008): 205-226.
• Heberling, Cara, et al. "Extent of the microbial biosphere in the oceanic crust." Geochemistry, Geophysics, Geosystems 11.8 (2010).
• HYCOM Global Ocean Model. Retrieved from https://www.hycom.org/dataserver July, 2018.
• LaRowe, Douglas E., et al. "Temperature and volume of global marine sediments." Geology 45.3 (2017): 275-278.
• Laske, G., et al. "CRUST1. 0: An updated global model of Earth’s crust." Geophys Res Abs 14 (2012): 3743.
• Magnabosco, C., et al. "The biomass and biodiversity of the continental subsurface." Nature Geoscience 11.10 (2018): 707-717.Sandwell ETOPO
• Willmott, Cort J., and Kenji Matsuura. "Terrestrial air temperature and precipitation: Monthly and annual time series (1950–1999) Version 1.02." Center for Climatic Research, University of Delaware, Newark (2001).