Ambient acoustic imaging in helioseismology

被引:67
作者
Chang, HK [1 ]
Chou, DY [1 ]
LaBonte, B [1 ]
Sun, MT [1 ]
Mu, TM [1 ]
Chen, HR [1 ]
Loudagh, S [1 ]
Yeh, SJ [1 ]
Jimenez, A [1 ]
RabelloSoares, MC [1 ]
Ai, G [1 ]
Wang, GP [1 ]
Zirin, H [1 ]
Marquette, W [1 ]
Ehgamberdiev, S [1 ]
Khalikov, S [1 ]
机构
[1] UNIV HAWAII,INST ASTRON,HONOLULU,HI 96822
关键词
D O I
10.1038/39822
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
The increasing availability of high spatial resolution data of velocity and intensity variations on the Sun has stimulated the development of helioseismological techniques that probe the solar interior in localized regions. The techniques developed so far(1-4) have yielded information on physical quantities (such as the flow velocity and magnetic field) below the surface, but are still far from providing a detailed picture of local subsurface inhomogeneities. Here we report the development and application of a new method for constructing three-dimensional solar images, utilizing acoustic noise (or stochastic P-mode oscillations) in the Sun. We treat a region of the solar surface as a phased array of acoustic sensors, which acts as a computational 'lens'; acoustic waves 'scattered' by local inhomogeneities, such as sunspots, are collected and summed in phase, based on the knowledge of how (on average) they travel within the Sun. In this way, we are able to construct a three-dimensional image of a region of the solar interior.
引用
收藏
页码:825 / 827
页数:3
相关论文
共 11 条
[1]   SCATTERING OF P-MODES BY SUNSPOTS .1. OBSERVATIONS [J].
BRAUN, DC .
ASTROPHYSICAL JOURNAL, 1995, 451 (02) :859-+
[2]  
BRAUN DC, IN PRESS ASTROPHYS J
[3]   IMAGING THE OCEAN WITH AMBIENT NOISE [J].
BUCKINGHAM, MJ ;
BERKHOUT, BV ;
GLEGG, SAL .
NATURE, 1992, 356 (6367) :327-329
[4]  
CHEN HW, IN PRESS ASTROPHYS J
[5]   TAIWAN OSCILLATION NETWORK [J].
CHOU, DY ;
SUN, MT ;
HUANG, TY ;
JIMENEZ, A ;
LAI, SP ;
CHI, PJ ;
OU, KT ;
WANG, CC ;
LU, JY ;
CHU, AL ;
NIU, CS ;
MU, TM ;
CHEN, KR ;
CHOU, YP ;
CHAO, H ;
RABELLOSOARES, MC ;
AI, GX ;
WANG, GP ;
ZIRIN, H ;
MARQUETTE, W ;
NENOW, J .
SOLAR PHYSICS, 1995, 160 (02) :237-243
[6]   TIME-DISTANCE HELIOSEISMOLOGY IN THE VICINITY OF SUNSPOTS [J].
DSILVA, S ;
DUVALL, TL .
ASTROPHYSICAL JOURNAL, 1995, 438 (01) :454-462
[7]   TIME DISTANCE HELIOSEISMOLOGY [J].
DUVALL, TL ;
JEFFERIES, SM ;
HARVEY, JW ;
POMERANTZ, MA .
NATURE, 1993, 362 (6419) :430-432
[8]   Downflows under sunspots detected by helioseismic tomography [J].
Duvall, TL ;
DSilva, S ;
Jefferies, SM ;
Harvey, JW ;
Schou, J .
NATURE, 1996, 379 (6562) :235-237
[9]  
HILL F, 1995, ESA, P63
[10]  
LINDSEY C, IN PRESS ASTROPHYS J