'Glacial maximum' diaporamas de présentation

Glaciation and the Pleistocene

Glaciation and the Pleistocene. Over the last two million years, severe climatic changes had tremendous influence on life on earth. These events were recent enough that a number of techniques that they can be studied using techniques that are not available for more ancient times.

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The importance of longevity in a greenhouse gas as climate forcing

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OC 450: Orbital Controls on Climate (Chaps 8 and 10)

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Quaternary modelling case studies

Quaternary modelling case studies. Last Glacial Inception : ~115kyrBP Last Glacial Maximum : ~21kyrBP The mid-Holocene : ~6kyrBP. Mid-Holocene, 6kyrBP. Glacial Inception, 115kyrBP. Last Glacial Maximum, 21kyrBP. Petit et al, Nature, 399, 429-436, 1999.

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Glacial Processes and Landforms

Glacial Processes and Landforms. What is a glacier? How do glaciers form?. What is a glacier? A glacier is simply the existence of year-round ice on the landscape. There are two broad types: continental and alpine. How do glaciers form?

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Climate models in (palaeo-) climatic research

Climate models in (palaeo-) climatic research. How can we use climate models as tools for hypothesis testing in (palaeo-) climatic research and how can we apply this to understand climate change from the Cretaceous to the near future? Nanne Weber. Temperature 1900-2100. +0.6C.

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Pre-Clovis

Pre-Clovis. When did people first appear in North America? How did they get here?/Where did they come from? What was their environment and culture like?. Late Paleolithic Migrations. The last lands to inhabit: Glacial conditions and Migration to New Frontiers Sumatra and Borneo

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Changes in methane at the Last Glacial Maximum

Changes in methane at the Last Glacial Maximum To what extent have changes in methane sinks influenced its concentration and isotopic composition in the past? J. G. Levine, E. W. Wolff, A. E. Jones, L. C. Sime, P. J. Valdes, G. D. Carver, N. J. Warwick, J. A. Pyle.

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FIGURE 13-1 Mammals of the glacial maximum, 21000 years ago

Chapter 13 The Last Glacial Maximum. FIGURE 13-1 Mammals of the glacial maximum, 21000 years ago. FIGURE 13-2 A cave painting of the glacial era. How do large ice sheets and lower CO2 explain global climate at the last glacial max. ?.

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Evolutionary history of tropical forests

Evolutionary history of tropical forests. Geologic eras: a revision. Permian 225 million years ago. Triassic 200 million years ago. Jurassic 135 million years ago. Cretaceous 65 million years ago. The Earth: always changing. Present day.

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Geological Modeling: Climate-hydrological modeling of sediment supply

Geological Modeling: Climate-hydrological modeling of sediment supply . Dr. Irina Overeem Community Surface Dynamics Modeling System University of Colorado at Boulder September 2008. Course outline 1. Lectures by Irina Overeem: Introduction and overview Deterministic and geometric models

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Nutrient Limitation of Biological Productivity in the Ocean during the LGM

Nutrient Limitation of Biological Productivity in the Ocean during the LGM. Dana Ionita James Holland Meryl Mims. Falkowski (1997) and Ganeshram (2002). Redfield Ratio. Ratio of Carbon, Nitrogen, and Phosphorous. C:N:P = 106:16:1 In the open ocean: C:N = ~1000:15 N:P = ~15:1

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Lake Level Fluctuations in Lake Victoria, East Africa

Lake Level Fluctuations in Lake Victoria, East Africa. Implications for Cichlid Evolution. Shannon Greene Geology and Planetary Sciences California Institute of Technology November 27, 2006. Objectives. Methods for constructing climate history Factors driving African climate change

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LECTURE 2 WHAT IS A CONTINENTAL MARGIN?

CEE 598, GEOL 593 TURBIDITY CURRENTS: MORPHODYNAMICS AND DEPOSITS. LECTURE 2 WHAT IS A CONTINENTAL MARGIN?. EVERY CONTINENT IS SURROUNDED BY A MARGIN. The margin consists of a shelf (out to ~ 100 m), slope , and rise (which tapers off into deep water). continental plain (subaerial).

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Last Glacial Maximum ~18,000 to 20,000 years ago

Last Glacial Maximum ~18,000 to 20,000 years ago. 13-4. Retreat of the Last Glacial Maximum. Seal level Changes. Coral Reefs. Uplifted Coral Reefs. Younger Dryas Reversal (of Deglaciation). Meltwater and North Atlantic Deep water. Missoula Flood Box 14-2.

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Ocean Tides

Ocean Tides. Why tides occur. Refers to cyclic rise and fall of sea water. Variations in gravitational attraction between the Earth, moon and sun. The Moon. Primary factor that controls the rhythm and height of the tides 2 tidal bulges due to gravitational attraction

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Chapter 06 Author: Lee Hannah

Chapter 06 Author: Lee Hannah. FIGURE 6.1 Pangaea (a), Laurasia and Gondwanaland (b). (a) Courtesy of Canadian Geographic. (b) From Wikimedia Commons.

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Department of Earth Sciences Seminar Series

Department of Earth Sciences Seminar Series. Paleo-feedbacks in the Hydrological and Energy Cycles in the CCSM3 Melissa Burt, Colorado State University. Where: Caputo 210; Armstrong Auditorium When: 4:00 PM social in the Caputo Lobby 4:30 PM Seminar Begins. Abstract

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