Mention the global occurrence of volcanic eruptions in 2021 and their impact on the regional environment. (150 words) [2021]
A volcanic eruption is the release of molten rock, ash, and gases from a volcano’s magma chamber through a vent or fissure in the Earth’s crust.
In 2021, multiple volcanic eruptions took place globally, impacting the nearby environment in various ways. Some significant events include:
- Fagradalsfjall, Iceland (March 2021): This strombolian and vulcanian eruption had a volcanic explosivity index of 2, resulting in a moderate cloud column height and a huge ejecta volume.
- Pacaya, Guatemala (March 2021): The eruption prompted evacuations, ashfall affecting crops and air quality, and lava flows damaging infrastructure.
- La Soufrière, St. Vincent and the Grenadines (April 2021): The eruption caused evacuations, ashfall on nearby islands, and disruptions to agriculture and water supplies.
- Nyiragongo, Democratic Republic of Congo (May 2021): The eruption led to the destruction of homes by lava flows, displacement of people, and concerns about air quality and potential acid rain.
- Cumbre Vieja, La Palma, Canary Islands (September 2021): The eruption resulted in evacuations, destruction of homes and infrastructure, and concerns about air quality and volcanic gases.
- Semeru, Indonesia (December 2021): The eruption caused fatalities, displacement of people, and damage to infrastructure and agriculture due to ashfall and pyroclastic flows.
These eruptions affected the regional environment through ashfall, lava flows, and volcanic gas release.
- Ashfall can damage crops, contaminate water sources, and affect air quality, while lava flows can destroy infrastructure and alter landscapes.
- Volcanic gases, such as sulfur dioxide, can contribute to air pollution and acid rain, posing risks to human health and the environment.
In summary, 2021’s volcanic eruptions significantly impacted the regional environment, affecting agriculture, infrastructure, and air quality. Monitoring and understanding these events are crucial for mitigating their effects and improving disaster preparedness.
![An elevated corridor is being constructed to reduce traffic congestion in the capital of a particular state. You have been selected as project manager of this prestigious project on your professional competence and experience. The deadline is to complete the project in the next two years by 30 June 2021, since the project is to be inaugurated by the Chief Minister before the elections are announced in the second week of July 2021. While carrying out the surprise inspection by the inspecting team, a minor crack was noticed in one of the piers of the elevated corridor possibly due to poor material used. You immediately informed the chief engineer and stopped further work. It was assessed by you that a minimum of three piers of the elevated corridor have to be demolished and reconstructed. But this process will delay the project minimum by four to six months. But the chief engineer overruled the observation of the inspecting team on the ground that it was a minor crack that will not in any way impact the strength and durability of the bridge. He ordered you to overlook the observation of the inspecting team and continue working with the same speed and tempo. He informed you that the minister does not want any delay as he wants the Chief Minister to inaugurate the elevated corridor before the elections are declared. Also informed you that the contractor is a far relative of the minister and he wants him to finish the project. He also gave you a hint that your further promotion as an additional chief engineer is under consideration by the ministry. However, you strongly felt that the minor crack in the pier in the elevated corridor will adversely affect the health and life of the bridge and therefore it will be very dangerous not to repair the elevated corridor. [2021]](https://www.iasexpress.net/wp-content/uploads/content-views/cvp_default_image-600x300.png)
Responses