@article{oai:ir.kagoshima-u.ac.jp:00007883, author = {源河, 朝之}, journal = {鹿児島大学水産学部紀要=Memoirs of Faculty of Fisheries Kagoshima University}, month = {2016-10-28}, note = {The loran-ground-wave was measured in 1963 and in 1964 on the sea surrounding Kyushu, with an accompaniment of some considerations on observatory errors. This might be owed its origin to some more or less complicated causes which are to be brought forth by various determing factors, for example, the existence of land in the route of the propagation, or the anomalous weather conditions and so on. And the observation results might be summarized as in the following : (1) In case there should be any lands in the propagation route, the propagation is to be deterred. (2) In case there should happen any anomalous change in the weather conditions in the propagation route, the propagation is to be deterred. (3) In case where the propagation-route should be carried along the beach-line, the propagation is to be deterred. 4) Generally, the propagation deterrent error is in right proportion to the propagation distance, both on sea and on land, while some errors not attributable to the above mentioned principle were observed sometimes, the cause of which was not ascertained yet. Some effects are supposed to be brought about in case there should be the Kuroshio running across the propagation route, the clarification of the phenomenon was left to further study.}, pages = {30--51}, title = {九州周辺海上におけるロラン地上波の伝播についての考察}, volume = {14}, year = {} }