Toyama Bay

The bay is a part of the Sea of ​​Japan, confined to Ikujibana, west of the Kurobe River estuary, in the east, and the Noto Peninsula in the west. The water is over 1000 meters deep. The bottom topography is divided into east and west by the mid-ocean ridge, which stretches from the center of the bay to the northwest. In the west, the continental shelf is relatively wide, stretching 4 to 6 kilometers from the coast, and the undersea canyons that continue to the mouths of the Jinzu River, Sho River, and other rivers cut the continental shelf, extending long and boat-shaped from the bottom of Toyama Bay into the Sea of ​​Japan. Fixed net fishing is carried out using the continental shelf. In the east, the continental shelf is poorly developed and quickly becomes deep. The bay coast is mostly sandy west of the Joganji River estuary, but to the east it is a gravel beach, and after low pressure systems pass through from autumn to winter, "turning waves" occur, causing severe coastal erosion and a continuous series of revetments.

The bay area is home to fishing ports such as Ikuji, Namerikawa, Shinminato, and Himi, as well as the important ports of Toyama, Shin-Toyama, and Fushiki. With industrial areas behind them, the area has developed as a port of entry and exit for imports and exports.

[Saburo Fukai]

"Toyama Bay" edited by Shoji Fujii (1974, Kogen Publishing, Toyama Bunko)

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

東部は黒部川河口西方の生地鼻(いくじばな)、西部は能登(のと)半島に限られた日本海の海湾。水深は1000メートルを超える。湾の中央部から北々西に延びる中央海嶺(かいれい)によって海底地形は東西に分かれる。西側は大陸棚が海岸から4～6キロメートルと比較的広く発達し、神通(じんづう)川、庄(しょう)川などの河口に続く海底谷が大陸棚を刻み、富山湾底から舟状形に長く日本海に延びている。大陸棚を利用して定置網漁業が行われている。東側は大陸棚の発達は不良で、すぐ深くなっている。湾岸は常願寺川河口以西は砂浜の海岸が多いが、以東は礫浜(れきはま)で、秋から冬にかけて低気圧が通過したあとに「より回り波」が発生し、海岸侵食が激しく護岸堤防が連続している。

　湾岸には生地、滑川(なめりかわ)、新湊(しんみなと)、氷見(ひみ)などの漁港のほか、富山、新富山、伏木(ふしき)の重要港湾があり、背後に工業地を控え、輸移出入港として発達している。

［深井三郎］

『藤井昭二編『富山湾』（1974・巧玄出版・富山文庫）』

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