Sea Review - Rain Ice

…It is believed to have belonged to the Yamato Imperial Court earlier than Izumo Province, and the Oki Kuni no Miyatsuko was appointed there. Then, at the end of the 7th century, a system of Kaihyo (Kaicho) was established in the front of the islands, and Sukihyo (Suki) was established in the rear of the Fujiwara-kyo, as confirmed by wooden tablets excavated from the ruins of Fujiwara-kyo. The first appearance of Oki Province under the Ritsuryo system was in an article for 702 (Taiho 2) in the Shoku Nihongi, and Chifu and Kaifu counties were established in the front of the islands, and Suki and Ochi counties were established in the rear of the islands. …

*Some of the terminology that refers to "Kaihyo" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…出雲国よりも早くヤマト国家の朝廷に属したと考えられ，意岐国造が任じられていた。ついで7世紀末には，島前に海評，島後に次（すき）評の評（こおり）の制度が施行されていたことが，藤原京跡出土の木簡で確認される。律令制下の隠岐国は，《続日本紀》の702年(大宝2)の記事に初見するが，島前に知夫（ちふ∥ちふり）郡･海部郡，島後に周吉（すき）郡･穏地（おち）郡がおかれた。…

※「海評」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報