SHIZUOKA –
Mount Fuji has entered its summer time climbing season, drawing lots of of hundreds of tourists whereas authorities on its Shizuoka and Yamanashi sides take sharply completely different approaches to defending climbers from a potential eruption.
All three climbing routes on the Shizuoka facet opened in July, and greater than 200,000 persons are anticipated to aim to succeed in the summit this season if customer numbers comply with their normal sample.
More than 300 years have handed since Mount Fuji final erupted, and specialists have repeatedly warned that one other eruption might happen at any time.
An eruption might ship massive volcanic rocks flying close to the crater and expose climbers to pyroclastic flows, lava and different life-threatening hazards.
Even underneath regular situations, it takes not less than about three hours to stroll from the summit to the fifth station, making a fast and orderly descent troublesome throughout an emergency.
Yamanashi Prefecture put in an emergency shelter on the Yoshida Trail in 2026 to offer climbers with momentary safety throughout an eruption.
The reinforced-concrete construction measures 2.5 meters broad and 5.4 meters deep and may accommodate about 135 individuals. Yamanashi plans to put in 13 shelters alongside the Yoshida Trail over the subsequent 5 years.
Shizuoka Prefecture, nonetheless, says it has no plans to put in shelters on its facet of the mountain.
“The time spent remaining in a shelter could itself become dangerous,” mentioned Norihisa Ashikawa, head of the Shizuoka Prefectural Government’s disaster data division. “The basic principle of disaster prevention is to have people leave Mount Fuji as quickly as possible.”
The nationwide authorities, native authorities and different organizations have put in eruption-monitoring gear at greater than 40 places round Mount Fuji.
On the three Shizuoka climbing routes, the Japan Meteorological Agency points data explaining volcanic situations when irregular exercise is detected. Instructions to descend are then delivered via mountain huts and smartphone functions utilized by particular person climbers.
“There are three climbing trails, so providing shelters for everyone using them would be somewhat unrealistic,” Ashikawa mentioned.
Mountain huts accountable for guiding climbers to security are additionally making ready for an emergency, although staff stay involved about whether or not directions might attain everybody in time.
At Unkaiso, a mountain hut on the sixth station of the Fujinomiya Trail, workers have ready helmets and loudspeakers to be used throughout an eruption.
“We would call out, ‘An evacuation order has been issued, so please descend quickly,'” mentioned Naotoshi Watanabe, the hut’s consultant.
Watanabe mentioned Mount Fuji’s huge dimension would make it troublesome to distribute emergency data throughout your entire space. “Mount Fuji is enormous. I think it would be difficult to make sure the information truly reaches people over such a wide area,” he mentioned.
The hazard was demonstrated by the 2014 eruption of Mount Ontake, which straddles Nagano and Gifu prefectures. The eruption killed 58 individuals, principally climbers, and left 5 others lacking.
Experts imagine Mount Fuji is unlikely to supply a serious eruption with none warning, however they warning that it’s not possible to know prematurely when indicators of an eruption will seem.
“If large numbers of people are using a climbing route, the standard approach would be to provide some kind of facility where they can take emergency refuge,” mentioned Takayoshi Iwata, a visiting professor at Shizuoka University’s Center for Integrated Research and Education of Natural Hazards.
Mount Fuji can turn out to be closely congested round dawn and through dangerous climate, complicating any try to maneuver climbers shortly down the mountain.
Authorities and different organizations concerned in managing Mount Fuji might want to strengthen measures, together with consideration of extra shelters, to guard climbers if indicators of an eruption emerge.
The Hoei eruption, Mount Fuji’s most up-to-date and considered one of its largest recorded explosive eruptions, started on December 16, 1707, from vents that opened on the mountain’s southeastern flank quite than on the summit, and continued intermittently till January 1, 1708. The eruption created the Hoei craters and Mount Hoei, which stay distinguished options on the Shizuoka facet.
The eruption ejected huge portions of pumice, scoria and volcanic ash over surrounding communities. Heavy deposits buried farmland and broken villages close to the mountain, whereas ash was carried eastward so far as Edo, present-day Tokyo, roughly 100 kilometers away. The accrued materials additionally contributed to flooding and sediment disasters that continued after the eruption ended.
The occasion occurred 49 days after the highly effective Hoei earthquake struck central and southwestern Japan. Researchers have examined whether or not the earthquake influenced volcanic exercise beneath Mount Fuji, though the exact relationship stays unsure. No eruption has occurred at Mount Fuji because the Hoei occasion, however the mountain stays an energetic volcano underneath steady statement.
Source: SBSnews6