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History of the Super Dual Auroral Radar Network (SuperDARN)-I: pre-SuperDARN developments in high frequency radar technology for ionospheric research and selected scientific results 超级双极光雷达网(SuperDARN)的历史-I:用于电离层研究的高频雷达技术和选定的科学结果在超级双极光探测网之前的发展
IF 0.3 4区 哲学 Q1 Arts and Humanities Pub Date : 2021-05-11 DOI: 10.5194/HGSS-12-77-2021
R. Greenwald
Abstract. Part I of this history describes the motivations for developing radars in the high frequency (HF) band to study plasma density irregularities in the F region of the auroral zone and polar cap ionospheres. French and Swedish scientists were the first to use HF frequencies to study the Doppler velocities of HF radar backscatter from F-region plasma density irregularities over northern Sweden. These observations encouraged the author of this paper to pursue similar measurements over northeastern Alaska, and this eventually led to the construction of a large HF-phased-array radar at Goose Bay, Labrador, Canada. This radar utilized frequencies from 8–20 MHz and could be electronically steered over 16 beam directions, covering a 52 ∘ azimuth sector. Subsequently, similar radars were constructed at Schefferville, Quebec, and Halley Station, Antarctica. Observations with these radars showed that F-region backscatter often exhibited Doppler velocities that were significantly above and below the ion-acoustic velocity. This distinguished HF Doppler measurements from prior measurements of E-region irregularities that were obtained with radars operating at very high frequency (VHF) and ultra-high frequency (UHF). Results obtained with these early HF radars are also presented. They include comparisons of Doppler velocities observed with HF radars and incoherent scatter radars, comparisons of plasma convection patterns observed simultaneously in conjugate hemispheres, and the response of these patterns to changes in the interplanetary magnetic field, transient velocity enhancements in the dayside cusp, preferred frequencies for geomagnetic pulsations, and observations of medium-scale atmospheric gravity waves with HF radars.
摘要这段历史的第一部分描述了在高频(HF)波段开发雷达的动机,以研究极光带F区和极冠电离层的等离子体密度不规则性。法国和瑞典科学家是第一个使用高频频率研究瑞典北部F区等离子体密度不规则性高频雷达反向散射的多普勒速度的人。这些观测结果鼓励了本文作者在阿拉斯加东北部进行类似的测量,最终在加拿大拉布拉多的鹅湾建造了一个大型HF相控阵雷达。该雷达利用了8-20的频率 MHz,并且可以在16个波束方向上进行电子操纵,覆盖52∘方位扇区。随后,在魁北克的谢弗维尔和南极洲的哈雷站建造了类似的雷达。这些雷达的观测结果表明,F区后向散射通常表现出明显高于和低于离子声速的多普勒速度。这将HF多普勒测量与先前在甚高频(VHF)和超高频(UHF)下工作的雷达获得的E区不规则性的测量区分开来。还介绍了用这些早期高频雷达获得的结果。它们包括HF雷达和非相干散射雷达观测到的多普勒速度的比较,共轭半球同时观测到的等离子体对流模式的比较,以及这些模式对行星际磁场变化的响应,白天尖点的瞬态速度增强,地磁脉动的首选频率,以及用高频雷达观测中等规模的大气重力波。
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引用次数: 6
Book review: From Crust to Core – A Chronicle of Deep Carbon Science by Simon Mitton 书评:Simon Mitton的《从地壳到核心——深碳科学编年史》
IF 0.3 4区 哲学 Q1 Arts and Humanities Pub Date : 2021-05-11 DOI: 10.5194/HGSS-12-95-2021
M. Bouhifd
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引用次数: 0
The formation of ionospheric physics – confluence of traditions and threads of continuity 电离层物理学的形成——传统和连续性线索的汇合
IF 0.3 4区 哲学 Q1 Arts and Humanities Pub Date : 2021-04-07 DOI: 10.5194/HGSS-12-57-2021
Aitor Anduaga
Abstract. This paper examines how ionospheric physics emerged as a research specialityin Britain, Germany, and the United States in the first four decades of the20th century. It argues that the formation of this discipline can beviewed as the confluence of four deep-rooted traditions in which scientistsand engineers transformed, from within, research areas connected toradio wave propagation and geomagnetism. These traditions include Cambridgeschool's mathematical physics, Gottingen's mathematical physics, laboratory-based experimental physics, and Humboldtian-style terrestrial physics. Although focused on ionospheric physics, the paper pursues the idea that a dynamic conception of scientific tradition will provide a new perspective for the study of geosciences history.
摘要本文考察了电离层物理学如何在20世纪的头40年里成为英国、德国和美国的一个研究专业。它认为,这门学科的形成可以被看作是四种根深蒂固的传统的融合,科学家和工程师在这些传统中从内部转变了与无线电波传播和地磁相关的研究领域。这些传统包括剑桥的数学物理、哥廷根的数学物理、以实验室为基础的实验物理和洪堡式的陆地物理。虽然本文关注的是电离层物理学,但本文所追求的观点是,科学传统的动态概念将为地球科学史的研究提供一个新的视角。
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引用次数: 0
A brief history of ball lightning observations by scientists and trained professionals 由科学家和训练有素的专业人员所作的球状闪电观测简史
IF 0.3 4区 哲学 Q1 Arts and Humanities Pub Date : 2021-03-01 DOI: 10.5194/HGSS-12-43-2021
A. Keul
Abstract. With thousands of eyewitness reports, but fewinstrumental records and no consensus about a theory, ball lightning remainsan unsolved problem in atmospheric physics. As chances to monitor thistransient phenomenon are low, it seems promising to evaluate observationreports by scientists and trained professionals. The following work compiles20 published case histories and adds 15 from the author's work and 6 from aRussian database. Forty-one cases from eight countries, 1868–2020, are presented inabstract form with a synthesis. The collection of cases does not claim to becomplete. Six influential or notable ball lightning cases are added. It isconcluded that well-documented cases from trained observers can promotefieldwork and stimulate and evaluate ball lightning theories. Scientists whohave not reported their experience are invited to share it with the author.
摘要尽管有成千上万的目击报告,但很少有仪器记录,也没有关于理论的共识,球状闪电仍然是大气物理学中一个未解决的问题。由于监测这种短暂现象的机会很低,因此评估科学家和训练有素的专业人员的观测报告似乎很有希望。以下工作汇编了20个已发表的案例,并增加了15个来自作者的工作和6个来自俄罗斯数据库。从八个国家的41个案例,1868年至2020年,以抽象的形式提出了一个综合。收集的案例并不声称已完成。增加了六个有影响或著名的球状闪电案例。结论是,来自训练有素的观察员的充分记录的案例可以促进实地工作,促进和评估球状闪电理论。没有报告他们经历的科学家被邀请与作者分享。
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引用次数: 2
The development of geophysics in the early period of the People's Republic of China based on the Institute of Geophysics, Chinese Academy of Sciences (1950–1966) 从中国科学院地球物理研究所看建国初期地球物理的发展(1950-1966)
IF 0.3 4区 哲学 Q1 Arts and Humanities Pub Date : 2021-02-03 DOI: 10.5194/HGSS-12-21-2021
Zhihui Zhang, Rui Wang
Abstract. From the perspective of the social history of science and transnational history, this paper reviewed the development of the Institute of Geophysics, Chinese Academy of Sciences (IGCAS), rather than focusing on its scientific achievements. Before the 1950s, the discipline of geophysics in China, except for the branch of meteorology, had a very weak foundation, and few researchers were engaged in it. The systematic development of geophysics began with the establishment of IGCAS. In this paper, the early development of IGCAS was researched thoroughly. At first, we briefly reviewed the establishment process for IGCAS. After being promoted by the desire of scientists to develop big geophysics, the Chinese Academy of Sciences (CAS) integrated scattered academic forces, which included geomagnetism and geophysical exploration, to establish the IGCAS. The IGCAS was based on the Institute of Meteorology of Academia Sinica in the Republic of China era. After that, we summarized work done by IGCAS in the development of geophysics from the 1950s to 1966, the year in which the Cultural Revolution began. We focused on policy support, adjustment of organizational structure, and scientific capacity building, when China was facing an isolated international diplomatic environment, continuous domestic political movements, and an austere social economy. Then, to bolster the development of geophysics in China, the slogan of “Missions Drive Disciplines”, which was instilled and implemented by the Chinese scientific community, was introduced briefly. The scientific development of the IGCAS and typical examples in several branches of geophysics, which included atmospheric science, seismology, space physics, and other fields, were systematically summarized and benchmarked to the international academic level. We then summarized the basic research on geophysics carried out by the institute in economic construction and national defense. Finally, the experience and lessons in the development of this institute and its effect on geophysics in China were explored.
摘要本文从科学社会史和跨国史的角度,回顾了中国科学院地球物理研究所(IGCAS)的发展历程,而不是关注其科学成就。20世纪50年代以前,我国的地球物理学科除气象学分支外,基础非常薄弱,很少有研究人员从事。地球物理的系统发展始于IGCAS的建立。本文对IGCAS的早期发展进行了深入的研究。首先,我们简要回顾了IGCAS的建立过程。在科学家们大力发展地球物理的推动下,CAS整合了包括地磁和地球物理勘探在内的分散学术力量,建立了IGCAS。IGCAS以民国时期的中央研究院气象研究所为基础。之后,我们总结了IGCAS从20世纪50年代到1966年(文化大革命开始的那一年)在地球物理学发展方面所做的工作。当中国面临孤立的国际外交环境、持续的国内政治运动和严峻的社会经济时,我们专注于政策支持、组织结构调整和科学能力建设。然后,简要介绍了中国科学界为推动中国地球物理事业的发展而提出并实施的“使命驱动学科”的口号。系统总结了IGCAS的科学发展以及地球物理学几个分支的典型例子,包括大气科学、地震学、空间物理学和其他领域,并将其与国际学术水平进行了比较。然后总结了该所在经济建设和国防建设中开展的地球物理基础研究。最后,对该研究所的发展经验和教训以及对我国地球物理的影响进行了探讨。
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引用次数: 0
The history of the Geophysical Service of Austria 奥地利地球物理服务的历史
IF 0.3 4区 哲学 Q1 Arts and Humanities Pub Date : 2021-01-15 DOI: 10.5194/HGSS-12-11-2021
W. Lenhardt
Abstract. A brief summary will be given of the historical development ofGeophysical Service of Austria, which comprises the national geomagnetic,gravimetric and seismological services as well as the “Applied GeophysicsSection” located at the Zentralanstalt fur Meteorologie und Geodynamik(ZAMG) in Vienna in Austria. The paper presents the achievements, changesand challenges of the Department from its modest beginning in 1851 until2020. Finally, a special emphasis is placed on the Conrad Observatory – oneof the most comprehensive geophysical research observatories in the world.
摘要本文将简要介绍奥地利地球物理服务的历史发展,该服务包括国家地磁、重力和地震服务,以及位于奥地利维也纳气象和地球动力学中心的“应用地球物理部门”。本文介绍了该部门从1851年开始到2020年的成就、变化和挑战。最后,特别强调的是康拉德天文台——世界上最全面的地球物理研究天文台之一。
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引用次数: 0
The legacy of the Haldde Observatory 霍尔德天文台的遗产
IF 0.3 4区 哲学 Q1 Arts and Humanities Pub Date : 2021-01-14 DOI: 10.5194/HGSS-12-1-2021
A. Brekke
Abstract. A historical review of the establishment of the HalddeObservatory in Bossekop, Kaafjord, Finnmark, in northern Norway is presentedtogether with some of the scientific outcomes of the efforts and theaftermath of this enterprise that led to the establishment of theUniversity of Tromso in 1968 and finally the inauguration of the HalddeObservatory as a historic site by the European Physical Society in 2018.
摘要芬兰马克Kaafjord Bossekop Haldde天文台成立的历史回顾,在挪威北部,我们共同展示了这项事业的一些科学成果,这项事业于1968年建立了特罗姆瑟大学,并最终于2018年由欧洲物理学会将哈尔德天文台作为历史遗址落成。
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引用次数: 0
Time and tide: pendulum clocks and gravity tides 时间和潮汐:钟摆和重力潮汐
IF 0.3 4区 哲学 Q1 Arts and Humanities Pub Date : 2020-09-16 DOI: 10.5194/HGSS-11-215-2020
D. Agnew
Abstract. Tidal fluctuations in gravity will affect the period ofa pendulum and hence the timekeeping of any such clock that uses one.Since pendulum clocks were, until the 1940s,the best timekeepers available,there has been interest in seeing if tidal effectscould be observed in the best performing examples of these clocks.The first such observation was in 1929,before gravity tides were measured with spring gravimeters;at the time of the second (1940–1943), suchgravimeters were still being developed.Subsequent observations, having been madeafter pendulum clocks had ceased to be the bestavailable timekeepers and after reliablegravimeter measurements of tides,have been more of an indication of clock qualitythan a contribution to our knowledge of tides.This paper describes the different measurementsand revisits them in terms of our current knowledgeof Earth tides.Doing so shows that clock-based systems,though noisier than spring gravimeters,were an early form of an absolute gravimeter thatcould indeed observe Earth tides.
摘要重力的潮汐波动会影响钟摆的周期,从而影响任何使用钟摆的时钟的计时。由于直到20世纪40年代,钟摆一直是可用的最好的计时器,人们一直有兴趣看看这些时钟中性能最好的例子是否能观察到潮汐效应。第一次这样的观测是在1929年,在用春季重力仪测量重力潮汐之前;在第二次(1940年至1943年),这种重力仪仍在开发中。在钟摆不再是最好的计时器之后,在重力仪对潮汐进行可靠测量之后,进行了后续的观测,这更多地表明了时钟的质量,而不是对我们潮汐知识的贡献。本文描述了不同的测量方法,并根据我们目前对地球潮汐的了解重新审视了它们。这样做表明,基于时钟的系统虽然比春季重力仪噪音更大,但却是可以观测地球潮汐的绝对重力仪的早期形式。
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引用次数: 1
Behind the curve: a comparison of historical sources for the Carnegie curve of the global atmospheric electric circuit 曲线背后:全球大气电路卡内基曲线的历史来源比较
IF 0.3 4区 哲学 Q1 Arts and Humanities Pub Date : 2020-09-11 DOI: 10.5194/hgss-11-207-2020
R. Harrison
Abstract. The “Carnegie curve” describes the diurnal variation of the globalatmospheric electric circuit. It was originally found from atmosphericelectric potential gradient (PG) measurements made on the Carnegie, effectively afloating atmospheric electrical observatory, which undertook global cruisesbetween 1915 and 1929. These measurements confirmed that the single diurnalcycle PG variation, previously obtained in both polar regions, was global inextent. The averaged diurnal PG variation, represented by derived harmonicfits, provides a characteristic variation known as the “Carnegie curve”,against which modern measurements are still compared. The ocean air PGmeasurements were extensively described in reports of the CarnegieInstitution of Washington (CIW) but widely used secondary sources of theCarnegie curve contain small differences, arising through approximations andtranscription errors. Investigations using the historical CIW data show thatthe original harmonic fit coefficients are reproducible. Despite theinconsistencies, the secondary sources nevertheless mostly yield diurnalvariations which fall within the variability of the original historicaldata.
摘要“卡内基曲线”描述了全球大气电路的日变化。它最初是从卡内基的大气电势梯度(PG)测量中发现的,该天文台在1915年至1929年间进行了全球巡航。这些测量结果证实,先前在两极地区获得的单个昼夜周期PG变化是全局不精确的。由导出的调和系数表示的平均日PG变化提供了一种被称为“卡内基曲线”的特征变化,现代测量仍与之进行比较。CarnegieInstitution of Washington(CIW)的报告中对海洋空气PG测量进行了广泛描述,但广泛使用的Carnegie曲线的二次源包含较小的差异,这是由于近似和转换误差引起的。使用历史CIW数据进行的研究表明,原始谐波拟合系数是可重复的。尽管存在一致性,但次要来源大多产生内部变量,这些变量属于原始历史数据的可变性范围。
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引用次数: 9
Carl Friedrich Gauss and the Gauss Society: a brief overview 卡尔·弗里德里希·高斯与高斯学会
IF 0.3 4区 哲学 Q1 Arts and Humanities Pub Date : 2020-09-08 DOI: 10.5194/hgss-11-199-2020
A. Wittmann
Abstract. Carl Friedrich Gauss (1777–1855) was one of the most eminentscientists of all time. He was born in Brunswick, studied in Gottingen, passed his doctoral examination in Helmstedt, and from 1807 until his death, was the director of the Gottingen Astronomical Observatory. As a professor of astronomy, he worked in the fields of astronomy, mathematics, geodesy, and physics, where he made world-famous and lasting contributions. In his honour, and to preserve his memory, the Gauss Society was founded in Gottingen in 1962. The present paper aims to give nonspecialists a brief introduction into the life of Gauss and an introduction into the Gauss Society and its history.
摘要卡尔·弗里德里希·高斯(1777-1855)是有史以来最杰出的科学家之一。他出生在布伦瑞克,在哥廷根学习,在赫尔姆斯特德通过了博士考试,从1807年到去世,他一直是哥廷根天文台的台长。作为一名天文学教授,他在天文学、数学、大地测量学和物理学领域工作,在这些领域做出了举世闻名的持久贡献。1962年,为了纪念他,高斯学会在哥廷根成立。本文旨在向非专业人士简要介绍高斯的生平,介绍高斯社会及其历史。
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引用次数: 1
期刊
History of Geo- and Space Sciences
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