Comets in the Path of Earth

被引：2

作者：

Jenniskens, Peter ^{[1
]}

Popova, Olga ^{[2
]}

机构：

[1] SETI Inst, 189 Bernardo Ave, Mountain View, CA 94043 USA

[2] Russian Acad Sci, Inst Dynam Geospheres, Leninsky Prospect 38 Bldg 1, Moscow 119334, Russia

来源：

ELEMENTS | 2018年 / 14卷 / 02期

关键词：

comet; impact; meteor; meteoroid; interplanetary dust; zodiacal cloud; IMPACTORS; AIRBURST; JUPITER; ORIGIN; CLOUD;

D O I：

10.2138/gselements.14.2.107

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

Earth's atmosphere offers little protection against comet impacts, because many comets are bigger than 1 km. Fewer comets hit Earth than asteroids of the same size, except perhaps for sizes larger than 10 km. Comets release copious amounts of solid debris called meteoroids, and these meteoroids disperse to form meteoroid streams, some of which cause meteor showers on Earth. Recent meteor shower observations reveal the presence of potentially dangerous parent comets and trace their dynamical evolution. In addition, some showers leave a signature of "cosmic dust" in our atmosphere.

引用

页码：107 / 112

页数：6

共 50 条

[31] Comets: Potential sources of prebiotic molecules for the early Earth
Despois, D
Cottin, H
LECTURES IN ASTROBIOLOGY, VOL 1, 2005, : 289 - 352
[32] Did Earth's oceans come from comets?
不详
ESA BULLETIN-EUROPEAN SPACE AGENCY, 2011, (148) : 64 - 65
[33] DISCRETE WAVE-PACKETS UPSTREAM FROM THE EARTH AND COMETS
LE, G
RUSSELL, CT
SMITH, EJ
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS, 1989, 94 (A4): : 3755 - 3760
[34] Sungrazing comets as source of pickup ions at Earth orbit and Ulysses
Bzowski, M
Królikowska, M
Proceedings of the Conference Solar Wind 11 - SOHO 16: CONNECTING SUN AND HELIOSPHERE, 2005, 592 : 397 - 400
[35] The influence of comets on the atmosphere of the earth according to cathodic theory.
Deslandres, H
COMPTES RENDUS HEBDOMADAIRES DES SEANCES DE L ACADEMIE DES SCIENCES, 1910, 150 : 1281 - 1286
[36] Implications of small comets for the noble gas inventories of Earth and Mars
Swindle, TD
Kring, DA
GEOPHYSICAL RESEARCH LETTERS, 1997, 24 (24) : 3113 - 3116
[37] COMETS AND THE FORMATION OF BIOCHEMICAL-COMPOUNDS ON THE PRIMITIVE EARTH - A REVIEW
ORO, J
MILLS, T
LAZCANO, A
ORIGINS OF LIFE AND EVOLUTION OF THE BIOSPHERE, 1992, 21 (5-6): : 267 - 277
[38] Trails of OH emissions from small comets near Earth
Frank, LA
Sigwarth, JB
GEOPHYSICAL RESEARCH LETTERS, 1997, 24 (19) : 2435 - 2438
[39] PAGE,T - NEIGHBORS OF EARTH PLANETS COMETS AND DEBRIS OF SPACE
SEEGER, RJ
AMERICAN JOURNAL OF PHYSICS, 1967, 35 (02) : 173 - &
[40] Detection of atomic oxygen trails of small comets in the vicinity of Earth
Frank, LA
Sigwarth, JB
GEOPHYSICAL RESEARCH LETTERS, 1997, 24 (19) : 2431 - 2434

← 1 2 3 4 5 →