Investor Presentaiton
Sea-Level
Typically represented by curves that
display changes throughout geological
history
Problem: Global Mean Sea-Level
estimates from sea-level indicators
and oxygen isotope curves mismatch
for recent cold periods (MIS 3, 5a)
Question: Is there a similar discrepancy
for older cold periods (MIS 6, 9a, 11a)?
Approach: We re-visit Huon coral reef
terrace sequence with high-resolution
topography and modelling
Quantifying past sea-level
is important...
to support estimates of
global ice-sheet volumes
and its spatio-temporal
response to climate change
to deduce local tectonic
uplift rates and estimate
associated earthquake
hazards
to reconstruct
paleogeography and test
models of human migration
And several other
applications...
sea level (m)
50
-50
-100
0
Global Mean Sea-Level estimates from sea-level indicators
(Dutton et al., 2015; Pico et al., 2016; Creveling et al., 2017)
3
5e
5c
5a
6
9e
7a 7c 7e
9a
11a
11c
Principal component analysis of 7 oxygen-isotope
derived sea-level curves (Spratt & Lisiecki, 2016)
-150
0
50
100
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age (ka)
300
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