Glaciation-Induced Sea-Level Change: Theory and Applications Glenn Milne, University of Durham February 2004.

Slides:

Advertisements

Similar presentations

Preliminary Evaluation of a Newly Discovered Holocene Scarp on the Sawtooth Fault, Central Idaho Glenn D. Thackray, David W. Rodgers, Eric Johnson and.

Advertisements

Atmospheric Loading Nicole M. Shivers.  “The Earth’s surface is perpetually being displaced due to temporally varying atmospheric oceanic and continental.

Glacial Isostatic Adjustment Contributions to Tide Gauge, Altimetry and GRACE Observations Glenn Milne Dept of Earth Sciences University of Durham, UK.

Abrupt Climate Change Evidence of climate changes that are too abrupt to be explained orbitally.

Solving Equations = 4x – 5(6x – 10) -132 = 4x – 30x = -26x = -26x 7 = x.

Climate models in (palaeo-) climatic research How can we use climate models as tools for hypothesis testing in (palaeo-) climatic research and how can.

DARGAN M. W. FRIERSON DEPARTMENT OF ATMOSPHERIC SCIENCES DAY 15: 05/18/2010 ATM S 111, Global Warming: Understanding the Forecast.

Ge 112. Geomorphology and Stratigraphy HOLOCENE SEA-LEVEL CHANGE Sonja Spasojević.

Glacial Rebound Glacial Rebound Studies depend on many factors. What are they ? Ice load History of the load Ocean water load on coastlines and globally.

Sea Surface Temperature anomalies during 1987 El Niño (SOURCE: IGOSS nmc ship, buoy & satellite data;

Some climate principles. Illumination of the earth by the sun: 1. More heat received at the equator than at the poles 2. Solid earth receives more.

Composite of Sea Level – for last 600 k years. Note that SL was not always extremely low during glacial periods. From Rabineau et al, EPSL, 2006.

The Last Glacial Maximum (LGM) Lesson 1 Starter Slides on the nature and timing of the LGM.

Using the Stratigraphic Record Cores from the sediments of deltas examined for peat, mud, and soils Transgressive sequences Determine the paleoenvironment.

Paleoclimatology Why is it important? Angela Colbert Climate Modeling Group October 24, 2011.

Don P. Chambers Center for Space Research The University of Texas at Austin Understanding Sea-Level Rise and Variability 6-9 June, 2006 Paris, France The.

New Core Curriculum Foundations of Scientific Process Current Environmental Problems.

Martin Sommerkorn WWF International Arctic Programme.

FORWARD AND INVERSE MODELLING OF GPS OBSERVATIONS FROM FENNOSCANDIA G.A. Milne 1, J.X. Mitrovica 2, H.-G. Scherneck 3, J.L. Davis 4, J.M. Johansson 3,

Arctic Palaeoclimate and its EXtremes (APEX). What do we mean by EXtremes? Conditions that represent the end points of magnitude / frequency behaviour.

Chapter 8: The future geodetic reference frames Thomas Herring, Hans-Peter Plag, Jim Ray, Zuheir Altamimi.

Geology Unit: Sea level history

Lecture 8 The Holocene and Recent Climate Change.

Glacial Processes and Landforms What is a glacier? How do glaciers form?

GLACIAL ISOSTATIC ADJUSTMENT AND COASTLINE MODELLING Glenn Milne

Thermosteric Effects on Long-Term Global Sea Level Change Jianli Chen Center for Space Research, University of Texas at Austin, USA

Greenhouse Effect Mechanisms Affecting the Greenhouse Evidence for Climate Change.

Sea-Level Change Driven by Recent Cryospheric and Hydrological Mass Flux Mark Tamisiea Harvard-Smithsonian Center for Astrophysics James Davis Emma Hill.

Thoughts on the GIA Issue in SNARF Jim Davis & Tom Herring Input from and discussions with Mark Tamisiea, Jerry Mitrovica, and Glenn Milne.

17.3 Ice Age. What is an Ice Age? Thousands of years ago ice sheets covered much more of the Earth’s surface. Thousands of years ago ice sheets covered.

Rheology of the Earth. Schedule Rheology Viscous, elastic & plastic Viscous, elastic & plastic Deformation maps and “Christmas tree’s” for mantle & lithosphere.

Closure of the Budget of Global Sea Level Rise Over the GRACE Era: The Importance and Magnitudes of the Corrections Required for Quaternary Ice-Age Influence.

Using Global Ocean Models to Project Sea Level Rise Robert Hallberg NOAA / GFDL.

(a) Pre-earthquake and (b) post-earthquake Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) images of North Sentinel Island. The.

Are We Getting Warmer?. How do you take a planets temperature?  If you have them, then thermometers spread around the earth can tell us the average temperature.

The Glacial Isostatic Adjustment of Fennoscandia: from Celcius to BIFROST Glenn Milne, University of Durham February 2004.

Lecture 27: Climate Change in the Last Years Ch. 13.

Are We Getting Warmer?. Is the Earth getting warmer? 1.Yes 2.No.

Late Holocene and Present Sea Level Changes Nils-Axel Mörner President ( ) of the INQUA Commission on Sea Level Changes and Coastal Evolution Leader.

C-Change in GEES Changing Coastal Environments

Understanding past climates Dick Kroon Department of Paleoecology and Paleoclimatology Faculty of Earth and Life Sciences Vrije Universiteit Amsterdam.

The Plausible Range of GIA Contributions to 3-D Motions at GPS Sites in the SNARF Network 2004 Joint AssemblyG21D-03 Mark Tamisiea 1, Jerry Mitrovica 2,

WOCE and BEYOND WOCE and BEYOND Nov Sea Level Rise: Can we explain what we measure? Anny Cazenave LEGOS-GRGS/CNES Toulouse, France.

Orbital Forcing on Climate Finish Climates of Geologic Time Introduction to Orbital Factors Axial Tilt Axial Precession Changes in Earth’s eccentric orbit.

Glacier photos. When the climate cooled… Ice advanced over the land, moving southward from Canada over the Great Lakes Region.

 It depends...  How much warming and what feedbacks?  Warming projections:  Intergovernmental Panel on Climate Change  2.7 to 3.3 K to 2100  Feedbacks.

Ice is Ice---isn’t it? Why are glaciers and ice sheets important? Large volume of fresh water is stored in ice masses Change in ice volume affects global.

Center for Satellite Applications and Research (STAR) Review 09 – 11 March 2010 Image: MODIS Land Group, NASA GSFC March 2000 Closing the Global Sea Level.

Assessing the GIA Contribution to SNARF Mark Tamisiea, James Davis, and Emma Hill Proudman Oceanographic Laboratory Harvard-Smithsonian Center for Astrophysics.

Assessing the GIA Contribution to SNARF Mark Tamisiea and Jim Davis Harvard-Smithsonian Center for Astrophysics.

Don P. Chambers College of Marine Science University of South Florida Measuring Mean Ocean Mass Variability with GRACE NASA Sea Level Workshop, Austin.

Climate Change and Public Health Maine’s Climate Future (and past) George L. Jacobson Professor Emeritus of Biology, Ecology, and Climate Change Maine.

The Surface of the Ice-Age Earth

Damian Gosch, Kyle Brown, and Jennifer McIntosh Department of Hydrology and Water Resources University of Arizona Outburst Flooding of Proglacial Lake.

E.A. Mathez, 2009, Climate Change: The Science of Global Warming and Our Energy Future, Columbia University Press. Photo by M. Rosing, University of Copenhagen.

What science is needed for adaptation? “effective adaptation requires a sound physically- based understanding of climate change, often at levels of detail.

Lecture 10: Ice on Earth EarthsClimate_Web_Chapter.pdfEarthsClimate_Web_Chapter.pdf, p. 8, 27-30; Ch. 2, p. 21; Ch. 10, p I.Sea Ice II.Glacial.

ESP Sea Level Washington, The Mall 2150 with gondoliers who have emigrated from Venice.

FORWARD AND INVERSE MODELLING OF GPS OBSERVATIONS OF FENNOSCANDIAN GIA G.A. Milne 1, J.X. Mitrovica 2, H.-G. Scherneck 3, J.L. Davis 4, J.M. Johansson.

Jacqueline Austermann Harriet Lau, Jerry Mitrovica CIDER community workshop, May 6 th 2016 Image credit: Mike Beauregard Towards reconciling viscosity.

Climates of Geologic Time

Figure 1 Predictions of (a) polar wander speed, (c) polar wander direction and (e) as a function of lower-mantle viscosity, in which an elastic lithosphere.

Stable North American Reference Frame (SNARF): Version 1

Geodesy & Crustal Deformation

Solving a System of Linear Equations

Stable North American Reference Frame (SNARF): Version 1

HISTORY OF THE EARTH ANSWER SHEET

Presentation transcript:

Glaciation-Induced Sea-Level Change: Theory and Applications Glenn Milne, University of Durham February 2004

GIA MODEL Earth ForcingEarth Rheology Rotational potential Euler equations Surface loading Ice Interdisciplinary approach Ocean Sea-level equation Other? Ice dammed lakes Sediment redistribution Impulse response formalism Linear Maxwell rheology 1D structure Ice history and Earth rheology are the key inputs

Mitrovica et al., Nature, 409, Geoid Perturbation

Solid Surface Perturbation

Ice-Induced Syphoning Mitrovica & Milne (2002)

Ocean-Induced Syphoning

Solving the Sea-Level Equation General methodology used is straightforward. Most groups now adopt the pseudo-spectral algorithm (Mitrovica and Peltier 1991). Some recent improvements have been incorporated: - Time-dependent shorelines (Lambeck &Nakada 1990; Johnston 1993; Peltier 1994) - Rotational feedback (Han & Wahr 1989; Milne & Mitrovica 1996;1998) - Near-field water influx (Milne 1998; Milne et al. 1999).

Applications of Sea-Level Model Infer solid earth rheology. Constrain regional ice sheet histories. Infer magnitude and source of glacial melt water -Glacial -Holocene -Present.

Data from 3 far-field sites indicate a massive melt water influx at ~14,250 yr BP (mwp-IA). Event of this magnitude would have a dramatic effect on climate system. Source(s) of mwp-IA strongly debated. Clark et al. (2002)

Fingerprinting the Source of mwp-IA Clark et al. (2002)

Fingerprinting the Source of mwp-IA Clark et al. (2002)