Millennial Variations of the Geomagnetic Field: from Data Recovery to Field Reconstruction

被引:27
作者
Donadini, F. [1 ]
Korte, M. [2 ]
Constable, C. [1 ]
机构
[1] Univ Calif San Diego, Scripps Inst Oceanog, Inst Geophys & Planetary Phys, La Jolla, CA 92093 USA
[2] Deutsch GeoForschungsZentrum GFZ, Helmholtz Zentrum Potsdam, D-14473 Potsdam, Germany
基金
美国国家科学基金会;
关键词
Earth: magnetic field evolution; Holocene; Archeomagnetism; EARTHS MAGNETIC-FIELD; SECULAR VARIATION; REMANENT MAGNETIZATION; PALEOINTENSITY EXPERIMENTS; RELATIVE PALEOINTENSITY; PALEO-INTENSITIES; DIPOLE-MOMENT; THELLIER; CORE; MICROWAVE;
D O I
10.1007/s11214-010-9662-y
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Variations of the geomagnetic field over past millennia can be determined from archeomagnetic data and paleomagnetic sediment records. The resolution and validity of any field reconstruction depends on the reliability of such indirect measurements of past field values. Considerable effort is invested to ensure that the magnetic minerals carrying the ancient magnetization are good, if not ideal, recorders of the magnetic field. This is achieved by performing a wide array of rock magnetic and microscopy investigations, many of which are outlined here. In addition to data quality, the spatial and temporal distributions of archeomagnetic and sediment records play a significant role in the accuracy of past field reconstruction. Global field reconstructions enable studies of dynamic processes in Earth's core. They rely on data compilations which ideally include information about the quality of a measurement and provide a useful archive for selecting data with the best characteristics. There is, however, a trade off between the total number of reliable data and the geographic or temporal coverage. In this review we describe the various types of paleomagnetic recorders, and the kind of measurements that are performed to gather reliable geomagnetic field information. We show which modeling strategies are most suitable, and the main features of the field that can be derived from the resulting models. Finally, we discuss prospects for progress in this kind of research.
引用
收藏
页码:219 / 246
页数:28
相关论文
共 97 条
[1]   GEOMAGNETIC INTENSITY IN EGYPT AND WESTERN ASIA DURING THE 2ND MILLENNIUM BC [J].
AITKEN, MJ ;
ALLSOP, AL ;
BUSSELL, GD ;
WINTER, MB .
NATURE, 1984, 310 (5975) :305-306
[2]   TIME-DEPENDENT MAPPING OF THE MAGNETIC-FIELD AT THE CORE-MANTLE BOUNDARY [J].
BLOXHAM, J ;
JACKSON, A .
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 1992, 97 (B13) :19537-19563
[3]   Investigating the reasons for the failure of palaeointensity experiments:: a study on historical lava flows from Mt. Etna (Italy) [J].
Calvo, M ;
Prévot, M ;
Perrin, M ;
Riisager, J .
GEOPHYSICAL JOURNAL INTERNATIONAL, 2002, 149 (01) :44-63
[4]   Increasing the efficiency of paleointensity analyses by selection of samples using first-order reversal curve diagrams [J].
Carvallo, Claire ;
Roberts, Andrew P. ;
Leonhardt, Roman ;
Laj, Carlo ;
Kissel, Catherine ;
Perrin, Mireille ;
Camps, Pierre .
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 2006, 111 (B12)
[5]   Quality control of archaeomagnetic determination using a modern kiln with a complex NRM [J].
Catanzariti, G. ;
McIntosh, G. ;
Gomez-Paccard, M. ;
Ruiz-Martinez, V. C. ;
Osete, M. L. ;
Chauvin, A. .
PHYSICS AND CHEMISTRY OF THE EARTH, 2008, 33 (6-7) :427-437
[6]  
CHANNEL J, 2007, ENCY GEOMAGNETISM PA, P781
[7]   Paleointensity of the geomagnetic field recovered on archaeomagnetic sites from France [J].
Chauvin, A ;
Garcia, Y ;
Lanos, P ;
Laubenheimer, F .
PHYSICS OF THE EARTH AND PLANETARY INTERIORS, 2000, 120 (1-2) :111-136
[8]   Multidomain behavior during Thellier paleointensity experiments:: results from the 1915 Mt. Lassen flow [J].
Coe, RS ;
Riisager, J ;
Plenier, G ;
Leonhardt, R ;
Krása, D .
PHYSICS OF THE EARTH AND PLANETARY INTERIORS, 2004, 147 (2-3) :141-153
[9]   PALEO-INTENSITIES OF EARTHS MAGNETIC FIELD DETERMINED FROM TERTIARY AND QUATERNARY ROCKS [J].
COE, RS .
JOURNAL OF GEOPHYSICAL RESEARCH, 1967, 72 (12) :3247-+
[10]   DETERMINATION OF PALEO-INTENSITIES OF EARTHS MAGNETIC FIELD WITH EMPHASIS ON MECHANISMS WHICH COULD CAUSE NON-IDEAL BEHAVIOR IN THELLIERS METHOD [J].
COE, RS .
JOURNAL OF GEOMAGNETISM AND GEOELECTRICITY, 1967, 19 (03) :157-&