In cases where a disaster involving an area of a prefecture has occurred or is likely to occur, when the prefectural governor finds that support concerning emergency disaster control measures at the municipal level within the area of the prefecture would not be implemented smoothly only by the instructions under Article 72, paragraph (1), or the request under paragraph (2) of the same Article, the governor may request other prefectural governors to support the mayor of the municipality where the disaster has occurred or is likely to occur (hereinafter referred to as "mayor of the municipality where the disaster has occurred or is likely to occur" in the following paragraph and the following Article).
In cases where support will be provided in response to the request under the preceding paragraph, when the prefectural governors who have received a request under the preceding paragraph find it particularly necessary for ensuring that emergency disaster control measures to be taken by the mayor of the municipality where the disaster has occurred or is likely to occur are implemented accurately and smoothly, they may request the mayors of municipalities within the areas of the prefectures to support the mayor of the municipality where the disaster has occurred or is likely to occur.
Those who render the support concerning a request from the prefectural governors under the preceding two paragraphs are to act under the direction of the mayor of the municipality receiving the support insofar as the implementation of emergency disaster control measures is concerned.
前二項の規定による都道府県知事の要求に係る応援に従事する者は、災害応急対策の実施については、当該応援を受ける市町村長の指揮の下に行動するものとする。
定義第二条第一項第一号・法令全体に適用
暴風、竜巻、豪雨、豪雪、洪水、崖崩れ、土石流、高潮、地震、津波、地盤の液状化、噴火、地滑りその他の異常な自然現象又は大規模な火事若しくは爆発その他その及ぼす被害の程度においてこれらに類する政令で定める原因により生ずる被害
わかりやすく言うと
暴風、豪雨、地震、津波、噴火などの異常な自然現象や、大規模な火事・爆発によって生じる被害のことです。被害の程度がこれらに似た原因で政令で定めるものによる被害も含まれます。
略称規定第七十四条の二第一項・この規定及び第七十四条の二第二項及び第七十四条の三の中だけ
…他の都道府県知事に対し、当該災害が発生し又は発生するおそれがある市町村の市町村長(次項及び次条において「災害発生市町村長」という。)を応援することを求めることができる。
わかりやすく言うと
その都道府県の地域に係る災害が発生し、又は発生するおそれがある市町村の市町村長のことです。都道府県知事は、自らの指示や要求だけでは応援が円滑に実施されないと認めるとき、他の都道府県知事にこの市町村長を応援するよう求めることができます。