|
1 History and Description of Ice Ages |
|
|
1 | (38) |
|
1.1 Discovery of Ice Ages |
|
|
1 | (6) |
|
1.2 Description of Ice Sheets |
|
|
7 | (4) |
|
1.3 Vegetation During LGM |
|
|
11 | (11) |
|
|
11 | (3) |
|
|
14 | (6) |
|
|
20 | (2) |
|
1.4 Vegetation and Dust Generation During the LGM |
|
|
22 | (17) |
|
1.4.1 Introduction: Effect of Low CO2 on Plants |
|
|
22 | (3) |
|
1.4.2 C3 and C4 Flora Differences |
|
|
25 | (1) |
|
1.4.3 Effects of Low CO2 on Tree Lines |
|
|
25 | (5) |
|
1.4.4 Source of the LGM Dust |
|
|
30 | (9) |
|
2 Variability of the Earth's Climate |
|
|
39 | (12) |
|
2.1 Factors that Influence Global Climate |
|
|
39 | (4) |
|
2.2 Stable Extremes of the Earth's Climate |
|
|
43 | (5) |
|
2.3 Ice Ages in the Recent Geological Past |
|
|
48 | (3) |
|
|
51 | (32) |
|
3.1 History of Ice Core Research |
|
|
51 | (6) |
|
|
57 | (16) |
|
|
57 | (1) |
|
|
58 | (1) |
|
3.2.3 Counting Layers Visually |
|
|
59 | (4) |
|
3.2.4 Layers Determined by Measurement |
|
|
63 | (2) |
|
|
65 | (3) |
|
3.2.6 Other Dating Methods |
|
|
68 | (1) |
|
3.2.7 Synchronization of Dating of Ice Cores from Greenland and Antarctica |
|
|
69 | (1) |
|
|
70 | (1) |
|
|
70 | (1) |
|
|
71 | (2) |
|
3.3 Processing Ice Core Data |
|
|
73 | (10) |
|
3.3.1 Temperature Estimates from Ice Cores |
|
|
73 | (4) |
|
3.3.2 Temperature Estimates from Borehole Models |
|
|
77 | (3) |
|
|
80 | (1) |
|
|
80 | (3) |
|
|
83 | (36) |
|
4.1 Greenland Ice Core Historical Temperatures |
|
|
84 | (5) |
|
4.2 Antarctica Ice Core Historical Temperatures |
|
|
89 | (1) |
|
4.2.1 Vostok and EPICA Data |
|
|
89 | (1) |
|
4.2.2 Homogeneity of Antarctic Ice Cores |
|
|
89 | (1) |
|
4.3 North-South Synchrony |
|
|
90 | (11) |
|
4.3.1 Direct Comparison of Greenland and Antarctica Ice Core Records |
|
|
90 | (6) |
|
|
96 | (3) |
|
4.3.3 Interpretation of Sudden Change in Terms of Ocean Circulation |
|
|
99 | (2) |
|
4.3.4 Seasonal Variability of Precipitation |
|
|
101 | (1) |
|
4.4 Data from High-Elevation Ice Cores |
|
|
101 | (1) |
|
|
102 | (14) |
|
|
102 | (3) |
|
|
105 | (11) |
|
|
116 | (3) |
|
|
119 | (20) |
|
|
120 | (5) |
|
|
125 | (4) |
|
5.3 Universality of Ocean Sediment Data |
|
|
129 | (1) |
|
5.4 Summary of Ocean Sediment Ice Volume Data |
|
|
130 | (2) |
|
5.5 Comparison of Ocean Sediment Data with Polar Ice Core Data |
|
|
132 | (3) |
|
5.6 Historical Sea Surface Temperatures |
|
|
135 | (1) |
|
|
136 | (3) |
|
|
139 | (16) |
|
|
139 | (7) |
|
|
139 | (2) |
|
6.1.2 Comparison of Devil's Hole Data with Ocean Sediment Data |
|
|
141 | (2) |
|
6.1.3 Devil's Hole: Global or Regional Data? |
|
|
143 | (1) |
|
6.1.4 Comparison of Devil's Hole Data with Vostok Data |
|
|
143 | (2) |
|
6.1.5 The Continuing Controversy |
|
|
145 | (1) |
|
|
146 | (1) |
|
6.3 Magnetism in Rocks and Loess |
|
|
147 | (1) |
|
|
147 | (1) |
|
6.3.2 Rock Magnetism in Lake Sediments |
|
|
148 | (1) |
|
|
148 | (2) |
|
|
150 | (2) |
|
|
150 | (1) |
|
|
151 | (1) |
|
|
151 | (1) |
|
|
152 | (3) |
|
7 Overview of the Various Models for Ice Ages |
|
|
155 | (30) |
|
|
157 | (1) |
|
7.2 Variability of the Sun |
|
|
158 | (1) |
|
|
158 | (2) |
|
|
160 | (4) |
|
|
164 | (1) |
|
|
164 | (13) |
|
7.6.1 Glacial-Interglacial Cycles: The Consensus View |
|
|
164 | (4) |
|
7.6.2 Sudden Climate Change---The Consensus View |
|
|
168 | (3) |
|
7.6.3 Wunsch's Objections |
|
|
171 | (6) |
|
7.7 Models Based on Clouds |
|
|
177 | (6) |
|
7.7.1 Extraterrestrial Dust Accretion |
|
|
178 | (1) |
|
7.7.2 Clouds Induced by Cosmic Rays |
|
|
178 | (4) |
|
7.7.3 Ocean-Atmosphere Model |
|
|
182 | (1) |
|
7.8 Models Based on the Southern Hemisphere |
|
|
183 | (2) |
|
8 Variability of the Earth's Orbit: Astronomical Theory |
|
|
185 | (42) |
|
|
185 | (3) |
|
8.2 Variability of the Earth's Orbit |
|
|
188 | (4) |
|
8.2.1 Variability Within the Orbital Plane |
|
|
188 | (4) |
|
8.2.2 Variability of the Orbital Plane |
|
|
192 | (1) |
|
8.3 Calculation of Solar Intensities |
|
|
192 | (2) |
|
8.4 Importance of Each Orbital Parameter |
|
|
194 | (3) |
|
8.5 Historical Solar Irradiance at Higher Latitudes |
|
|
197 | (2) |
|
8.6 Connection Between Solar Variability and Glaciation/Deglaciation Cycles According to Astronomical Theory |
|
|
199 | (21) |
|
8.6.1 Models for Ice Volume |
|
|
201 | (8) |
|
8.6.2 Review of the Imbries' Model |
|
|
209 | (4) |
|
|
213 | (1) |
|
8.6.4 Modification of Paillard Model |
|
|
213 | (7) |
|
8.7 Models Based on Eccentricity or Obliquity |
|
|
220 | (7) |
|
8.7.1 A Model Based on Eccentricity |
|
|
220 | (2) |
|
8.7.2 The Middle-Pleistocene Transition (MPT) |
|
|
222 | (5) |
|
9 Comparison of Astronomical Theory with Data |
|
|
227 | (22) |
|
9.1 Ice Volume Versus Solar Input |
|
|
227 | (10) |
|
|
237 | (12) |
|
|
237 | (4) |
|
9.2.2 Spectral Analysis of Solar and Paleoclimate Data |
|
|
241 | (8) |
|
|
249 | (8) |
|
11 Terminations of Ice Ages |
|
|
257 | (62) |
|
|
262 | (1) |
|
|
263 | (3) |
|
|
266 | (5) |
|
11.4 North or South (or Both)? |
|
|
271 | (5) |
|
11.5 Models Based on CO2 and the Southern Hemisphere |
|
|
276 | (3) |
|
11.6 Climate Models for Terminations of Ice Ages |
|
|
279 | (6) |
|
11.7 Model Based on Solar Amplitudes |
|
|
285 | (3) |
|
11.8 Dust as the Driver for Terminations |
|
|
288 | (22) |
|
|
288 | (1) |
|
11.8.2 Antarctic Dust Data |
|
|
289 | (1) |
|
11.8.3 Correlation of Ice Core Dust Data with Terminations |
|
|
290 | (6) |
|
11.8.4 Dust Levels on the Ice Sheets |
|
|
296 | (7) |
|
11.8.5 Optical Properties of Surface Deposited Dust |
|
|
303 | (1) |
|
11.8.6 Source of the Dust |
|
|
304 | (2) |
|
|
306 | (4) |
|
11.9 Model Based on Solar Thresholds |
|
|
310 | (3) |
|
11.10 The Milankovitch Model Versus the Most Likely Model |
|
|
313 | (6) |
|
11.10.1 Criteria for a Theory |
|
|
313 | (1) |
|
11.10.2 The "Milankovitch" Model |
|
|
314 | (2) |
|
11.10.3 The Most Likely Model |
|
|
316 | (2) |
|
11.10.4 Unanswered Questions |
|
|
318 | (1) |
|
12 Status of Our Understanding |
|
|
319 | (8) |
References |
|
327 | (16) |
Index |
|
343 | |