Sunday, January 19 2025

Data Processing . Earth Echoes

Mapping the Valencia Floods with Sentinel-1

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The recent floods in Valencia have caused extensive damage. To create a map of the affected areas, Sentinel-1A SAR (Synthetic Aperture Radar) imagery was utilized, offering reliable data to map and identify flooded zones, even under challenging weather conditions and cloud cover. For this analysis, two SAR images from Sentinel-1A were chosen: a pre-event image

Level 3 Mosaics over Africa

Copernicus Sentinel-3 mission has been designed and developed mainly to focus on the climate changes effects impacting on our planet and is carrying on board several instruments with medium-low resolution in order to pursuit this goal. From this perspective the main strength of the project is not standing in the capabilities to distinguish small objects

“Iceberg-tsunami” on icelandic Jökulsárlón lagoon

Last acquired Copernicus Sentinel-2B image captured an unusual event on the Jökulsárlón lagoon in Iceland where a mini-tsunami was generated by a massive calving on Breiðamerkurjökull outlet glacier. An iceberg had broken off the glacier and was in the process of flipping over when the image was sensed by the Sentinel-2 on perfect timing. As the

Intense Dust Storms in Africa

In late March 2018, strong winds caused by a train of low-pressure areas appeared to fuel the flow of dust across Africa. Dust storms are quite common during the Spring in the Sahara, because the weather used to change with the seasons. However, according to several observers in the region last week’s storms were particularly

Lake Natron

One of the most mysterious places in the world is the Lake Natron (02025‘S 36000‘E), located along the branch of the Rift Valley, known also as Gregory Rift, in the northern Tanzania. The lake is characterized by a wide stretches of water, which will highlight in red during the seasonal flowering of algae. In fact,

(43°N 142°E) Hokkaido: lattice structure

One of the more unusual features of Hokkaido, as seen from space, is a lattice-shaped windbreak forest found in the Konsen Plateau. This pattern is created by trees (primarily larch) planted in a lattice structure to protect farmland and livestock from bitterly cold, blowing winds. There is about 3 km (1.9 mi) between the lattices,

Island of California

The land of California existed as a myth among European explorers before it was discovered. The name “California” derives from a novel written by Garcia Ordonez de Montalvo in the 16th century titled, “Las Sergas del muy esforzado caballero Esplandian, hijo del excelente rey Amandis de Gaula.” It was the fifth book in a series of

Burian

The last week a large part of the Europe has been smashed by a wave of cold siberian weather carried by the Burian. Burian is a strong wind of cold air and it is indeed characteristic of the steppes located to the west of the Urals. The extremely cold air carried by Burian leds to

Mississippi River System

Learning about the Earth with Copernicus Space missions. The Mississippi river system is one of most complex water bodies system all around the World. The main river is around 3700 km long, its flow is feed by tenths of tributaries and its path cross a large number of states over the entire US territory. Thanks

Cebile storm over the Indian Ocean

During the last days in the remotest parts of the Indian Ocean a tropical cyclone was formed. Its name is Cebile and he reached the category strength 4. The storm was luckily formed far away from Madagascar, Sri Lanka and other inhabited islands, thus avoiding many damages and casualties. The cyclone has been captured by

Flooding in Madagascar, a first assessment from Satellite

Madagascar is the world’s fourth largest island, and due to its position in the middle of Indian Ocean is regularly hit by cyclones between the months of November and April. The last tropical cyclone “Ava” hit the island country off the southeastern coast of Africa between the 5th and the 7th of January, killing at least 36

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