scholarly journals Identification of possible intense historical geomagnetic storms using combined sunspot and auroral observations from East Asia

2005 ◽  
Vol 23 (3) ◽  
pp. 945-971 ◽  
Author(s):  
D. M. Willis ◽  
G. M. Armstrong ◽  
C. E. Ault ◽  
F. R. Stephenson
Keyword(s):  
East Asia ◽  
Geomagnetic Storm ◽  
Geomagnetic Storms ◽  
East Asian ◽  
Selection Criterion ◽  
Central Meridian ◽  
Solar Plasma ◽  
Sequence Of Events ◽  
Transit Times ◽  
Solar Feature

Abstract. Comprehensive catalogues of ancient sunspot and auroral observations from East Asia are used to identify possible intense historical geomagnetic storms in the interval 210 BC-AD 1918. There are about 270 entries in the sunspot catalogue and about 1150 entries in the auroral catalogue. Special databases have been constructed in which the scientific information in these two catalogues is placed in specified fields. For the purposes of this study, an historical geomagnetic storm is defined in terms of an auroral observation that is apparently associated with a particular sunspot observation, in the sense that the auroral observation occurred within several days of the sunspot observation. More precisely, a selection criterion is formulated for the automatic identification of such geomagnetic storms, using the oriental records stored in the sunspot and auroral databases. The selection criterion is based on specific assumptions about the duration of sunspot visibility with the unaided eye, the likely range of heliographic longitudes of an energetic solar feature, and the likely range of transit times for ejected solar plasma to travel from the Sun to the Earth. This selection criterion results in the identification of nineteen putative historical geomagnetic storms, although two of these storms are spurious in the sense that there are two examples of a single sunspot observation being associated with two different auroral observations separated by more than half a (synodic) solar rotation period. The literary and scientific reliabilities of the East Asian sunspot and auroral records that define the nineteen historical geomagnetic storms are discussed in detail in a set of appendices. A possible time sequence of events is presented for each geomagnetic storm, including possible dates for both the central meridian passage of the sunspot and the occurrence of the energetic solar feature, as well as likely transit times for the ejected solar plasma. European telescopic sunspot drawings from the seventeenth century are also used to assess the credibility of some of the later historical geomagnetic storms defined solely by the East Asian sunspot and auroral records. These drawings cast doubt on a few of the associations between sunspot and auroral observations based entirely on the oriental records, at least to the extent that the occidental drawings provide a more realistic date for central meridian passage of the sunspot actually associated with a particular auroral observation. Nevertheless, on those occasions for which European sunspot drawings are available, the dates of all the pertinent East Asian sunspot and auroral observations are corroborated, apart from just one Chinese sunspot observation. The ancient historical observations of sunspots and aurorae are discussed briefly in terms of modern observations of great geomagnetic storms.

scholarly journals Sporadic aurorae observed in East Asia

2007 ◽  
Vol 25 (2) ◽  
pp. 417-436 ◽  
Author(s):  
D. M. Willis ◽  
F. R. Stephenson ◽  
Keyword(s):  
United States ◽  
East Asia ◽  
Geomagnetic Storms ◽  
East Asian ◽  
Scientific Information ◽  
The United States ◽  
Royal Greenwich Observatory ◽  
Historical Sources ◽  
Approximate Location ◽  
Auroral Luminosity

Abstract. All the accessible auroral observations recorded in Chinese and Japanese histories during the interval AD 1840–1911 are investigated in detail. Most of these auroral records have never been translated into a Western language before. The East Asian auroral reports provide information on the date and approximate location of each auroral observation, together with limited scientific information on the characteristics of the auroral luminosity such as colour, duration, extent, position in the sky and approximate time of occurrence. The full translations of the original Chinese and Japanese auroral records are presented in an appendix, which contains bibliographic details of the various historical sources. (There are no known reliable Korean observations during this interval.) A second appendix discusses a few implausible "auroral" records, which have been rejected. The salient scientific properties of all exactly dated and reliable East Asian auroral observations in the interval AD 1840–1911 are summarised succinctly. By comparing the relevant scientific information on exactly dated auroral observations with the lists of great geomagnetic storms compiled by the Royal Greenwich Observatory, and also the tabulated values of the Ak (Helsinki) and aa (Greenwich and Melbourne) magnetic indices, it is found that 5 of the great geomagnetic storms (aa>150 or Ak>50) during either the second half of the nineteenth century or the first decade of the twentieth century are clearly identified by extensive auroral displays observed in China or Japan. Indeed, two of these great storms produced auroral displays observed in both countries on the same night. Conversely, at least 29 (69%) of the 42 Chinese and Japanese auroral observations occurred at times of weak-to-moderate geomagnetic activity (aa or Ak≤50). It is shown that these latter auroral displays are very similar to the more numerous (about 50) examples of sporadic aurorae observed in the United States during the interval AD 1880–1940. The localised nature and spatial structure of some sporadic aurorae observed in East Asia is indicated by the use of descriptive terms such as "lightning", "rainbow", "streak" and "grid".

The Colonial Documentary Film in South and South-East Asia

2017 ◽  
Keyword(s):  
East Asia ◽  
Subject Matter ◽  
Documentary Film ◽  
East Asian ◽  
South East Asia ◽  
Post Colonial ◽  
Historical Perspectives ◽  
The Third ◽  
Wide Range ◽  
Global Understanding

Writing from a wide range of historical perspectives, contributors to the anthology shed new light on historical, theoretical and empirical issues pertaining to the documentary film, in order to better comprehend the significant transformations of the form in colonial, late colonial and immediate post-colonial and postcolonial times in South and South-East Asia. In doing so, this anthology addresses an important gap in the global understanding of documentary discourses, practices, uses and styles. Based upon in-depth essays written by international authorities in the field and cutting-edge doctoral projects, this anthology is the first to encompass different periods, national contexts, subject matter and style in order to address important and also relatively little-known issues in colonial documentary film in the South and South-East Asian regions. This anthology is divided into three main thematic sections, each of which crosses national or geographical boundaries. The first section addresses issues of colonialism, late colonialism and independence. The second section looks at the use of the documentary film by missionaries and Christian evangelists, whilst the third explores the relation between documentary film, nationalism and representation.

Characteristics of Asian Mosquito Saliva Allergens for Specific Diagnoses and Effective Therapies

2020 ◽  
Vol 21 (2) ◽  
pp. 153-158 ◽  
Author(s):  
Soung-Hoo Jeon
Keyword(s):  
Allergic Reaction ◽  
East Asia ◽  
East Asian ◽  
Diagnosis And Treatment ◽  
Recombinant Allergens ◽  
Systemic Reactions ◽  
The Future ◽  
Mosquito Saliva ◽  
The Difference ◽  
Future Direction

An allergic reaction to mosquitoes can result in severe or abnormal local or systemic reactions such as anaphylaxis, angioedema, and general urticarial or wheezing. The aim of this review is to provide information on mosquito saliva allergens that can support the production of highly specific recombinant saliva allergens. In particular, candidate allergens of mosquitoes that are well suited to the ecology of mosquitoes that occur mainly in East Asia will be identified and introduced. By doing so, the diagnosis and treatment of patients with severe sensitivity to mosquito allergy will be improved by predicting the characteristics of East Asian mosquito allergy, presenting the future direction of production of recombinant allergens, and understanding the difference between East and West.

The Developmental Trading State

2017 ◽  
Author(s):  
Alex J. Bellamy
Keyword(s):  
Economic Growth ◽  
East Asia ◽  
National Economy ◽  
East Asian ◽  
The State ◽  
State Model ◽  
Principal Function ◽  
Mass Violence ◽  
The Way

This chapter demonstrates that the downwards pressure that state consolidation placed on mass violence was amplified by the type of state that emerged. Across East Asia, governments came to define themselves as “developmental” or “trading” states whose principal purpose was to grow the national economy and thereby improve the economic wellbeing of their citizens. Governments with different ideologies came to embrace economic growth and growing the prosperity of their populations as the principal function of the state and its core source of legitimacy. Despite some significant glitches along the way the adoption of the developmental trading state model has proven successful. Not only have East Asian governments succeeded in lifting hundreds of millions of people out of poverty, the practices and policy orientations dictated by this model helped shift governments and societies away from belligerent practices towards postures that prioritized peace and stability. This reinforced the trend towards greater peacefulness.

East Asian Exceptionalism to Western Populism and Migration Crisis

2018 ◽  
pp. 196-210
Author(s):  
John Lie
Keyword(s):  
World War Ii ◽  
East Asia ◽  
East Asian ◽  
Northeast Asia ◽  
Historical Account ◽  
World War ◽  
Post World War Ii ◽  
The World ◽  
Migration Crisis ◽  
And Migration

In the 2010s, the world is seemingly awash with waves of populism and anti-immigration movements. Yet virtually all discussions, owing to the prevailing Eurocentric perspective, bypass East Asia (more accurately, Northeast Asia) and the absence of strong populist or anti-immigration discourses or politics. This chapter presents a comparative and historical account of East Asian exceptionalism in the matter of migration crisis, especially given the West’s embrace of an insider-outsider dichotomy superseding the class- and nation-based divisions of the post–World War II era. The chapter also discusses some nascent articulations of Western-style populist discourses in Northeast Asia, and concludes with the potential for migration crisis in the region.

scholarly journals INTRODUCTION: HISTORY FROM BETWEEN AND THE GLOBAL CIRCULATIONS OF THE PAST IN ASIA AND EUROPE, 1600–1950

2020 ◽  
pp. 1-16
Author(s):  
LEIGH K. JENCO ◽  
JONATHAN CHAPPELL
Keyword(s):  
East Asia ◽  
Intellectual History ◽  
East Asian ◽  
Historical Narratives ◽  
Subjective Feeling ◽  
Historical Knowledge ◽  
Introduction History ◽  
The Past ◽  
Local Contexts ◽  
Forms Of Knowledge

Abstract This article argues for a ‘history from between’ as the best lens through which to understand the construction of historical knowledge between East Asia and Europe. ‘Between’ refers to the space framed by East Asia and Europe, but also to the global circulations of ideas in that space, and to the subjective feeling of embeddedness in larger-than-local contexts that being in such a space makes possible. Our contention is that the outcomes of such entanglements are not merely reactive forms of knowledge, of the kind implied by older studies of translation and reception in global intellectual history. Instead they are themselves ‘co-productions’: they are the shared and mutually interactive inputs to enduring modes of uses of the past, across both East Asian and European traditions. Taking seriously the possibility that interpretations of the past were not transferred, but rather were co-produced between East Asia and Europe, we reconstruct the braided histories of historical narratives that continue to shape constructions of identity throughout Eurasia.

scholarly journals Time delay of ionospheric TEC storms to geomagnetic storms and pre-storm disturbance events in East Asia

2020 ◽  
Author(s):  
Yuqiang Zhang ◽  
Zhensen Wu ◽  
Jian Feng ◽  
Tong Xu ◽  
Zhongxin Deng ◽  
...  
Keyword(s):  
Time Delay ◽  
East Asia ◽  
Geomagnetic Storms

scholarly journals Security expertise and international hierarchy: the case of ‘The Asia-Pacific Epistemic Community’

2017 ◽  
Vol 43 (3) ◽  
pp. 494-515 ◽  
Author(s):  
Björn Jerdén
Keyword(s):  
East Asia ◽  
Social Order ◽  
International Security ◽  
East Asian ◽  
Epistemic Community ◽  
Political Order ◽  
Asia Pacific ◽  
The Political ◽  
Regional Stability ◽  
General Explanation

AbstractMany states partially relinquish sovereignty in return for physical protection from a more powerful state. Mainstream theory on international hierarchies holds that such decisions are based on rational assessments of the relative qualities of the political order being offered. Such assessments, however, are bound to be contingent, and as such a reflection of the power to shape understandings of reality. Through a study of the remarkably persistent US-led security hierarchy in East Asia, this article puts forward the concept of the ‘epistemic community’ as a general explanation of how such understandings are shaped and, hence, why states accept subordinate positions in international hierarchies. The article conceptualises a transnational and multidisciplinary network of experts on international security – ‘The Asia-Pacific Epistemic Community’ – and demonstrates how it operates to convince East Asian policymakers that the current US-led social order is the best choice for maintaining regional ‘stability’.

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