{"created":"2021-03-01T06:27:12.381773+00:00","id":19692,"links":{},"metadata":{"_buckets":{"deposit":"3ca93f16-593e-478d-b87a-c0acd6b05b74"},"_deposit":{"id":"19692","owners":[],"pid":{"revision_id":0,"type":"depid","value":"19692"},"status":"published"},"_oai":{"id":"oai:nagoya.repo.nii.ac.jp:00019692","sets":["879:1183:1689:1715"]},"author_link":["57518","57519","57520","57521","57522","57523"],"item_1615768549627":{"attribute_name":"出版タイプ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_9_alternative_title_19":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"STUDIES OF THE ATMOSPHERIC WAVEFORMS NEAR THEIR ORIGINS PART IX ON THE ATMOSPHERlC WAVEFORM EMITTED BY NEARBY LIGHTNING DISCHARGE TO GROUND","subitem_alternative_title_language":"en"}]},"item_9_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1957-05-25","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"1-2","bibliographicPageEnd":"21","bibliographicPageStart":"14","bibliographicVolumeNumber":"7","bibliographic_titles":[{"bibliographic_title":"空電研究所報告","bibliographic_titleLang":"ja"}]}]},"item_9_description_4":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"The Authors have adopted the discontinuous method of recording the atmospheric waveforms, in which each waveform represented on the screen of C. R. T. with single time sweep is photographed in the respective frame on a high sensitive film. This method seems to be superior to the continuous method of recording in several respects. The one is that by employing the former method one can perform an uninterrupted observation of wavefoms throughout the period of a thunderstorm activity often lasting more than several hours, and therefore the statistical analysis of the waveform records obtained by this method makes it possible to find some general characteristics common to a certain type of lightning discharges. Following to his principle the authors have made a statistical analysis of waveform records obtained under thunderstorm conditions. It has been made clear by the present analysis that : (1) Almost 80 per cent of the observed stepped leaders of the discharges to ground are found to be the beta tyde leader. (2) Positive space charge lying about at the base of the thundercloud makes the occurrence probability of beta type leader to increase, nevertheless alpha type leader may often be observed to come into existence even in such cases where there is clear evidence that a strong positive space charge concentration is present at the lowermost part of a thundercloud. (3) The nature of the initial part of the stepped leader is the same for both of these two types and the time interval value between step pulses appearing on the initial part of the firs leader waveform decreases with the progress of a stepped leader discharge. It is concluded that the time interval value between step pulses in this part of a stepped leader is somewhat larger than the normal value and often amounts to more than 100 microsecs. throughout thet period during which the leader process is taking place just above the cloud base, and then it reduces rapidly to the normal value roughly amounting to 50 microsecs. when the leader tip moves downwards out of the cloud base. (4) Downward-moving step streamers having negative polarity produce positive differential type pulses, if the waveform is recorded at a place sufficiently distant from the lightning discharge. In the case of the cloud discharge it is observed that more than 60 per cent of the recorded waveforms have negative differential type pulses in contrast to less than 10 per cent positive pulsive waveforms. This means that the positive downward-moving or negative upward-moving streamers must appear from time to time during the period of a cloud discharge and build up many bursts of pulses occurring roughly at 10 millisecs. interval on the wave form of a cloud discharge. (5) The most probable height of a positive space charge is estmated from the waveforms of beta type stepped leaders. The estimation shows that there is the most probable position of the space charge at two heights. The one is about 0.6 km. high above the ground and lies between the cloud base and the ground, the other is about 1.3 km. high above the ground and lies just above the cloud base. These facts indicate that the positive space charge lying roughly at the cloud base level is produced by the accumulation of positive ions generated by the positive point discharges from the projections spreading On the open ground.","subitem_description_language":"en","subitem_description_type":"Abstract"}]},"item_9_identifier_60":{"attribute_name":"URI","attribute_value_mlt":[{"subitem_identifier_type":"HDL","subitem_identifier_uri":"http://hdl.handle.net/2237/21738"}]},"item_9_publisher_32":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"名古屋大学空電研究所","subitem_publisher_language":"ja"}]},"item_9_select_15":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_select_item":"publisher"}]},"item_9_source_id_7":{"attribute_name":"ISSN（print）","attribute_value_mlt":[{"subitem_source_identifier":"0465-7756","subitem_source_identifier_type":"PISSN"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"open access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_abf2"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"石川, 晴治","creatorNameLang":"ja"}],"nameIdentifiers":[{"nameIdentifier":"57518","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"高木, 増美","creatorNameLang":"ja"}],"nameIdentifiers":[{"nameIdentifier":"57519","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"竹内, 利雄","creatorNameLang":"ja"}],"nameIdentifiers":[{"nameIdentifier":"57520","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"ISIKAWA, Haruzi","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"57521","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"TAKAGI, Masumi","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"57522","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"TAKEUTI, Tosio","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"57523","nameIdentifierScheme":"WEKO"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2018-02-21"}],"displaytype":"detail","filename":"bulria_7_1-2_14.pdf","filesize":[{"value":"1.9 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"bulria_7_1-2_14.pdf","objectType":"fulltext","url":"https://nagoya.repo.nii.ac.jp/record/19692/files/bulria_7_1-2_14.pdf"},"version_id":"7d68e588-e53e-4137-8be6-0d5d17bc8e16"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"近距離空電波形の研究(第9報) : 対地放電第一先駆波形の微細構造","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"近距離空電波形の研究(第9報) : 対地放電第一先駆波形の微細構造","subitem_title_language":"ja"}]},"item_type_id":"9","owner":"1","path":["1715"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2015-04-28"},"publish_date":"2015-04-28","publish_status":"0","recid":"19692","relation_version_is_last":true,"title":["近距離空電波形の研究(第9報) : 対地放電第一先駆波形の微細構造"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-01-26T06:44:09.263332+00:00"}