{"id":43229,"date":"2023-04-06T15:55:00","date_gmt":"2023-04-06T06:55:00","guid":{"rendered":"https:\/\/shomei-tanteidan.org\/?p=43229"},"modified":"2026-01-14T15:33:24","modified_gmt":"2026-01-14T06:33:24","slug":"global-lighting-survey-yokohama_2022","status":"publish","type":"post","link":"https:\/\/shomei-tanteidan.org\/en\/global-lighting-survey-yokohama_2022\/","title":{"rendered":"City Night Survey : Yokohama Minato Mirai"},"content":{"rendered":"\n

2022.06.28\u3000Kouki Iwanaga+ Xiaoyi Dong+ Hikaru Kawata<\/h3>\n\n\n\n

Yokohama Minato Mirai, which has seen rapid development in recent years with projects such as Japan\u2019s first urban circulation ropeway \u201cYOKOHAMA AIR CABIN\u201d launched last spring, the cruise ship terminal \u201cYokohama Hammerhead,\u201d and the prestigious Hawaiian luxury resort \u201cThe Kahala Hotel & Resort Yokohama.\u201d The purpose was supposed to be to investigate whether the \u201cnightscape of Minato Mirai,\u201d which could be considered a tourism resource in itself, has been well preserved\u2026 but.<\/p>\n\n\n\n

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Streetlight Color Temperature Map of the \u201cCentral District\u201d and the \u201cShinko District\u201d<\/figcaption><\/figure>\n<\/div>\n\n
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Top: Nightscape during power-saving period \/ Bottom: Nightscape before power-saving (with Anniversaire in the center and the Cosmo Clock on the right illuminated)<\/figcaption><\/figure>\n<\/div>\n\n\n

\u25a0Relationship Between Zoning and Street Lighting<\/p>\n\n\n\n

The Minato Mirai area, which was developed on reclaimed land around Yokohama Port, can be broadly divided into three zones: the \u201cCentral District,\u201d the \u201cShinko District,\u201d and the \u201cYokohama Station East Exit District.\u201d Among these, our survey focused on the Central District\u2014with its high-rise buildings such as Landmark Tower and Queen\u2019s Square Towers\u2014and the Shinko District, which features many commercial and cultural facilities such as the Red Brick Warehouse and Yokohama Hammerhead.<\/p>\n\n\n\n

When examining the street lighting in these two districts, it was found that the streets running parallel to the Rinko trunk road and the Metropolitan Expressway were lit with sodium-colored lamps, while the streets leading toward the port, such as Icho Street and Keyaki Street, were illuminated with streetlights at a color temperature of 4000\u20135000K.<\/p>\n\n\n\n

At first glance, this color temperature plan, which changes according to the direction of the streets, appears well-organized. However, according to the building color scheme guidelines for the Minato Mirai area, the Central District is designed with bright achromatic tones, while the Shinko District follows a warm color palette consistent with the red brick aesthetic (Minato Mirai 21 Shinko District Townscape and Landscape Guidelines). Considering this, I felt that aligning the streetlight color temperature plan with the building color scheme would have made the urban landscapes of each district stand out even more. (Xiaoyi Dong)<\/p>\n\n\n

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\u25a0Minato Mirai under official energy-saving request<\/p>\n\n\n\n

Coincidentally, the day we conducted our survey fell within a period when an official energy-saving request had been issued due to electricity shortages. The newly opened YOKOHAMA AIR CABIN, whose gondolas normally emit light in a variety of colors, was completely dark that night, making it difficult to tell from a distance where it was operating.<\/p>\n\n\n\n

In addition, other iconic lighting elements that usually define the nightscape of Minato Mirai were turned off: the illuminations of the Cosmo Clock Ferris wheel, the floodlights of the InterContinental Hotel, the fa\u00e7ade lighting of Anniversaire, and the crown lighting of World Porters.<\/p>\n\n\n

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Cosmo World felt rather deserted, so I asked a ticket sales staff member whether the energy-saving measures had affected visitor numbers. The answer was, \u201cThere has been no impact due to energysaving.\u201d This may have been because our survey was conducted on a weekday.<\/p>\n\n\n\n

From a lighting perspective, even with the major light sources mentioned above turned off, when we measured the pavement illuminance walking from the Central District to the Shinko District, we still recorded around 15\u201330 lx. This was more than sufficient brightness for walking.<\/p>\n\n\n\n

Looking around, there were people lingering quietly along the waterfront, and groups of skateboarders gathering near the Red Brick Warehouse. Local residents did not seem to feel saddened by Minato Mirai\u2019s dimmed nightscape; on the contrary, they may have found the less flamboyant brightness level more comfortable. (Hikaru Kawata)<\/p>\n\n\n

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\u25a0How to Create an Energy-Saving Nightscape as a City
While the iconic nightscape elements were turned off, we found that the circular plaza of Grand Mall Park, near Landmark Tower, was illuminated with an excessive 500 lx of brightness\u2014even though nobody was using the space at the time. Furthermore, the luminous columns there exceeded 1000 cd\/\u33a1, glaring so intensely that they almost pierced the eyes. I felt that this kind of unnecessary energy consumption could be redirected into more meaningful lighting elements, contributing to the Minato Mirai nightscape. It also seemed clear that the city needs to review and identify more precisely where energy-saving should actually take place.<\/p>\n\n\n

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Because we began the survey expecting the glamorous nightscape that Minato Mirai is known for, the impact of these energy-saving measures was somewhat shocking. With symbolic lights extinguished, the balance of the nightscape was lost, reminding us that harmony is essential for urban nightscapes. At the same time, in Japan\u2019s ongoing pursuit of decarbonization, the balance between energy conservation and nightscape design will remain a long-term challenge.<\/p>\n\n\n\n

Team member Dong commented on the Cosmo Clock\u2019s illumination, saying, \u201cWhat\u2019s interesting is that when it is off, your line of sight passes through it, revealing the nightscape beyond.\u201d Indeed, while Cosmo World closes at 8:00 p.m., the Cosmo Clock continues to stay lit until midnight for the sake of Minato Mirai\u2019s scenery. Perhaps after 8:00 p.m., it would be better to limit illumination to periodic, time-signal-like moments while leaving it unlit in between.<\/p>\n\n\n\n

Because Minato Mirai is still in the process of development and the community\u3000is working together to build the city, we hope it will take pride as a future-oriented environmental city and create an energy-efficient nightscape that makes the most of its resources. ( Kouki Iwanaga)<\/p>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

2022.06.28\u3000Kouki Iwanaga+ Xiaoyi Dong+ Hikaru Kawata Yokohama Minato Mirai, which has seen rapid development in recent years with projects such as Japan\u2019s first urban circulation ropeway \u201cYOKOHAMA AIR CABIN\u201d launched last spring, the cruise…<\/p>\n","protected":false},"author":4,"featured_media":28426,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_locale":"en_US","_original_post":"http:\/\/shomei-tanteidan.org\/?p=29264","footnotes":""},"categories":[3,16,86],"tags":[],"class_list":["post-43229","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fieldwork","category-global-research","category-japan-global-research","en-US"],"acf":[],"yoast_head":"\nCity Night Survey : Yokohama Minato Mirai - \u7167\u660e\u63a2\u5075\u56e3.<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/shomei-tanteidan.org\/en\/global-lighting-survey-yokohama_2022\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"City Night Survey : Yokohama Minato Mirai - 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