Recently, there was a 4Level 7, causing part of the sea to become land, andCoastlineAdvance about 200 meters into the sea. This timeSerious damage was caused to the local area, including a seabed uplift of about 4 meters off the coast of Suzu City, Ishikawa Prefecture, and an expansion of about 240 hectares of land area along the coast from Suzu City to Wajima City. The death toll has reached 126, and 210 others remain unaccounted for. Houses in the affected areas have collapsed severely, and a large number of villages have been plunged into darkness, without water and electricity, making it very difficult for residents to live and rescue work. This timeThe direct economic loss has exceeded 800 billion yen. Next, we'll take a closer look at this oneThe effects and causes are described and analysed in detail.
It is reported in the Noto area of Ishikawa Prefecture, JapanAs a result, part of the sea area becomes landCoastlineAdvance about 200 meters into the sea. Researchers analysing satellite observations found that the seabed along the coast from Zhuzhou City via Wajima City to Shiga Town was uplifted and exposed, with a total length of about 85 kilometers. Within about 50 kilometers of the coast from Zhuzhou City to Wajima City, the land area has expanded by about 240 hectares. In addition, the seabed in the area around Minatsuki Bay in Wajima City is about 4 metersCoastlineAdvance about 200 meters into the sea. Overall,CausedCoastlinechanges. This phenomenon is usually found inIt occurs for a period of time after it occurs and is the result of changes in the earth's crust.
According to Ishikawa Prefecture statistics, as of now, the Noto PeninsulaAs a result, 126 people were killed and another 210 are missing. According to estimates, this timeThe direct economic loss will exceed 800 billion yen. The damage caused far exceeded previous economic estimates, mainly due to:The energy is large, the source is relatively shallow, and the tremor is strongly felt. In addition, the disruption of roads has led to delays in rescue, the lack of earthquake resistance of local houses, and the high aging rate of residentsdestructive power. In particular, the damage to Wajima City, Suzu City, and Noto Town has not yet been fully counted, and the number of people is likely to rise further.
This timeIt belongs to the earthquake swarm type, i.e. a series of without a mainshock, the main energy passes through multiple earthquakes of similar magnitudeRelease. The epicenter area stretches from the southern part of the Noto Peninsula to Ishikawa Prefecture and is shallow at a depth of about 10 km. This timeThe occurrence may be related to regional tectonics, and Japan is located in the Pacific RimBring it on, yesFrequent areas. In addition,The size and energy of the plate are related to the strain exerted on the plate, which is caused by changes in the earth's crustCoastlinechanges.
The impact is severe. First, the disappearance of people** and disappearances has led to a humanitarian crisis in the affected areas. Rescue operationsDisruptions to transportation, collapsed houses, and disruptions to water and electricity have all posed enormous challenges to relief efforts. Secondly,CoastlineChanges may lead to changes in the ecological environment. Organisms and marine species in the original marine ecosystem may have been due to this timeand are affected, and need to be monitored and protected. Finally,The economic losses caused are also enormous. In addition to direct losses, such as collapsed houses and damaged infrastructure, there are also indirect impacts, such as shutdowns and damage to tourism, which will have a long-term impact on the local economy.
In general, this timeIt brought a serious disaster to the Noto area of Ishikawa Prefecture, JapanCoastlineThe local impact, including the changes in people** and the economic losses, has been enormous. Post-disaster reconstruction and relief work still faces huge challenges, and the joint efforts of the whole society are needed to help the people in the disaster areas recover and rebuild.