-
2
-
-
0002333377
-
-
J. Jacobs, Ed. Academic Press, Orlando, FL
-
Reviewed in M. Fuller and S. Cisowski, in Geomagnetism, J. Jacobs, Ed. (Academic Press, Orlando, FL, 1987), vol. 2, p. 306.
-
(1987)
Geomagnetism
, vol.2
, pp. 306
-
-
Fuller, M.1
Cisowski, S.2
-
6
-
-
0016575046
-
-
K. A. Anderson et al., Space Sci. Instrum. 1, 439 (1975). R. P. Lin, Phys. Earth Planet. Int. 20, 271 (1979).
-
(1975)
Space Sci. Instrum.
, vol.1
, pp. 439
-
-
Anderson, K.A.1
-
7
-
-
0000943955
-
-
K. A. Anderson et al., Space Sci. Instrum. 1, 439 (1975). R. P. Lin, Phys. Earth Planet. Int. 20, 271 (1979).
-
(1979)
Phys. Earth Planet. Int.
, vol.20
, pp. 271
-
-
Lin, R.P.1
-
10
-
-
0345413726
-
-
NASA, Washington, DC
-
D. E. Wilhelms, in Geology of the Terrestrial Planets, NASA SP-469 (NASA, Washington, DC, 1984), p. 107.
-
(1984)
Geology of the Terrestrial Planets, NASA SP-469
, pp. 107
-
-
Wilhelms, D.E.1
-
12
-
-
0001944226
-
-
L. L. Hood, P. J. Coleman, Jr., D. E. Wilhelms, Science, 205, 53 (1979).
-
(1979)
Science
, vol.205
, pp. 53
-
-
Hood, L.L.1
Coleman Jr., P.J.2
Wilhelms, D.E.3
-
13
-
-
3543142869
-
-
There is some evidence that the virtual geomagnetic poles of these regions (the direction of the magnetic south pole of the moon-centered dipole that accounts for the observed crustal magnetic field) cluster around three axes. Changes in the global dipole orientation may have been caused by dynamo field reversals and reorientation of the moon's spin axis by giant impacts, although this interpretation is controversial [S. K. Runcorn, Proc. Lunar Planet. Sci. Conf. 11, 1867 (1980); Phys. Earth Planet. Int. 29, 135 (1982); L. L. Hood, Proc. Lunar Planet. Sci. Conf. 12, 817 (1981)].
-
(1980)
Proc. Lunar Planet. Sci. Conf.
, vol.11
, pp. 1867
-
-
Runcorn, S.K.1
-
14
-
-
0020374206
-
-
There is some evidence that the virtual geomagnetic poles of these regions (the direction of the magnetic south pole of the moon-centered dipole that accounts for the observed crustal magnetic field) cluster around three axes. Changes in the global dipole orientation may have been caused by dynamo field reversals and reorientation of the moon's spin axis by giant impacts, although this interpretation is controversial [S. K. Runcorn, Proc. Lunar Planet. Sci. Conf. 11, 1867 (1980); Phys. Earth Planet. Int. 29, 135 (1982); L. L. Hood, Proc. Lunar Planet. Sci. Conf. 12, 817 (1981)].
-
(1982)
Phys. Earth Planet. Int.
, vol.29
, pp. 135
-
-
-
15
-
-
0007714865
-
-
There is some evidence that the virtual geomagnetic poles of these regions (the direction of the magnetic south pole of the moon-centered dipole that accounts for the observed crustal magnetic field) cluster around three axes. Changes in the global dipole orientation may have been caused by dynamo field reversals and reorientation of the moon's spin axis by giant impacts, although this interpretation is controversial [S. K. Runcorn, Proc. Lunar Planet. Sci. Conf. 11, 1867 (1980); Phys. Earth Planet. Int. 29, 135 (1982); L. L. Hood, Proc. Lunar Planet. Sci. Conf. 12, 817 (1981)].
-
(1981)
Proc. Lunar Planet. Sci. Conf.
, vol.12
, pp. 817
-
-
Hood, L.L.1
-
16
-
-
0010576241
-
-
M. H. Acuña et al., Science 279, 1676 (1998).
-
(1998)
Science
, vol.279
, pp. 1676
-
-
Acuña, M.H.1
-
18
-
-
3543148761
-
-
note
-
The ER and experiment electronics are mounted on a 2.5-m boom that was deployed shortly after launch. The MAG sensor, which is separated from the ER electronics by a 1.2-m deployable boom, is a wide-range (up to 65,536 nT), low-noise (6 pT root mean square), high-sensitivity (as low as 2 pT) triaxial fluxgate magnetometer that measures magnetic fields from dc up to a sample rate of 18 Hz. The ER sensor consists of a symmetric hemispherical electrostatic analyzer that focuses incoming electrons onto an imaging detector that provides fine (∼1.4°) angular resolution in the plane of its 360° by 14° disk-shaped field of view (FOV). The analyzer is stepped in voltage through the entire energy range (∼10 to 20 keV) 32 times per spacecraft spin, and the ER is oriented so that its FOV covers the full sky (4π sr) every half spin (∼2.5 s). Thus, the full three-dimensional distribution of electrons can be obtained every half spin, but because of telemetry rate limitations it is only transmitted once every 16 spins (80 s, corresponding to ∼120 km of spacecraft motion). High temporal or spatial resolution mapping (2.5 s or ∼4 km) is provided in two energy channels by computing pitch angle bins with the magnetic field direction measured by the MAG, sorting the electron counts into the bins on board the spacecraft, and sending only the one-dimensional pitch angle distribution to the ground.
-
-
-
-
19
-
-
3543139310
-
-
note
-
c directly from the pitch angle distribution.
-
-
-
-
21
-
-
0000433040
-
-
Hilly terrain antipodal to the Imbrium and Orientale basins is thought to be produced by the focusing of seismic waves generated by those impacts [P. H. Schultz and D. E. Gault, Moon 12, 159 (1975)].
-
(1975)
Moon
, vol.12
, pp. 159
-
-
Schultz, P.H.1
Gault, D.E.2
-
23
-
-
3543078522
-
-
M. Fuller et al., Moon 9, 57 (1974).
-
(1974)
Moon
, vol.9
, pp. 57
-
-
Fuller, M.1
-
24
-
-
0003765244
-
-
R. Dmowska and J. R. Holton, Eds. International Geophysics Series, Academic Press, San Diego, CA
-
-5-T fields at the Earth's orbital distance. Such strong fields are also incompatible with terrestrial paleomagnetic data. For a review, see R. T. Merrill, M. W. McElhinny, P. L. McFadden, in The Magnetic Field of the Earth: Paleomagnetism, the Core, and the Deep Mantle, R. Dmowska and J. R. Holton, Eds. (International Geophysics Series, Academic Press, San Diego, CA, 1996), vol. 63, pp. 217-247.
-
(1996)
The Magnetic Field of the Earth: Paleomagnetism, the Core, and the Deep Mantle
, vol.63
, pp. 217-247
-
-
Merrill, R.T.1
McElhinny, M.W.2
McFadden, P.L.3
-
30
-
-
0342672398
-
-
D. S. Colburn, R. G. Currie, J. D. Mihalov, C. P. Sonett, Science 158, 1040 (1967); C. J. Owen et al., Geophys. Res. Lett. 23, 1263 (1996).
-
(1967)
Science
, vol.158
, pp. 1040
-
-
Colburn, D.S.1
Currie, R.G.2
Mihalov, J.D.3
Sonett, C.P.4
-
31
-
-
0030141829
-
-
D. S. Colburn, R. G. Currie, J. D. Mihalov, C. P. Sonett, Science 158, 1040 (1967); C. J. Owen et al., Geophys. Res. Lett. 23, 1263 (1996).
-
(1996)
Geophys. Res. Lett.
, vol.23
, pp. 1263
-
-
Owen, C.J.1
-
32
-
-
0008047294
-
-
N. F. Ness et al., J. Geophys. Res. 73, 3421 (1968); D. S. Colburn et al., ibid. 76, 2940 (1971).
-
(1968)
J. Geophys. Res.
, vol.73
, pp. 3421
-
-
Ness, N.F.1
-
33
-
-
0015065743
-
-
N. F. Ness et al., J. Geophys. Res. 73, 3421 (1968); D. S. Colburn et al., ibid. 76, 2940 (1971).
-
(1971)
J. Geophys. Res.
, vol.76
, pp. 2940
-
-
Colburn, D.S.1
-
39
-
-
0012673946
-
-
P. Dyal et al., Nature 236, 381 (1972); P. Dyal et al., Proc. Lunar Sci. Conf. 4, 2925 (1973).
-
(1972)
Nature
, vol.236
, pp. 381
-
-
Dyal, P.1
-
40
-
-
0012673946
-
-
P. Dyal et al., Nature 236, 381 (1972); P. Dyal et al., Proc. Lunar Sci. Conf. 4, 2925 (1973).
-
(1973)
Proc. Lunar Sci. Conf.
, vol.4
, pp. 2925
-
-
Dyal, P.1
-
41
-
-
3543147594
-
-
Apollo-like compressions would peak near 78°S latitude in Fig. 1
-
Apollo-like compressions would peak near 78°S latitude in Fig. 1.
-
-
-
-
42
-
-
0007423325
-
-
D. H. Fairfield, J. Geophys. Res. 79, 1368 (1974); M. Hoppe and C. T. Russell, Nature 287, 417 (1980).
-
(1974)
J. Geophys. Res.
, vol.79
, pp. 1368
-
-
Fairfield, D.H.1
-
43
-
-
34247117502
-
-
D. H. Fairfield, J. Geophys. Res. 79, 1368 (1974); M. Hoppe and C. T. Russell, Nature 287, 417 (1980).
-
(1980)
Nature
, vol.287
, pp. 417
-
-
Hoppe, M.1
Russell, C.T.2
-
44
-
-
3543096111
-
-
note
-
The contributions of P. Turin, R. Ulrich, R. Sterling, and J. Scheifele to the development of the experiment and data processing system are gratefully acknowledged. D.L.M. acknowledges discussions with S. D. Bale. WIND data were obtained from the Solar Wind Experiment (K. W. Olgilvie) and Magnetic Fields Investigation (R. P. Lepping) key parameter files. Research at the University of California, Berkeley, was supported by NASA through subcontract LMSC-HG80E477OR from Lockheed-Martin.
-
-
-
|