Feed aggregator | Отдел физики околоземного космического пространства

The rise in global mean sea level (GMSL) is a critical indicator of climate change. Hong Kong Polytechnic University (PolyU) researchers have utilized advanced space geodetic technologies to deliver the first precise 30-year (1993–2022) record of global ocean mass change (also known as barystatic sea level), revealing its dominant role in driving GMSL rise.

Sustainable energy: 'Fairy circles' can provide clues to depth of natural hydrogen sources

Phys.org: Earth science - Mon, 09/01/2025 - 17:00

Natural hydrogen from deep underground could be an important building block for the sustainable energy system of the future, but it is currently still difficult to predict where and at what depth elevated concentrations are located. New study results from the Department of Geology at the University of Vienna could make such predictions easier in the future. So-called "fairy circles"—round patches with vegetation damage—could be helpful indicators. This is because these "fairy circles" subside due to the seepage of natural hydrogen.

Rare oceanic plate delamination may explain Portugal's mysterious earthquakes

Phys.org: Earth science - Mon, 09/01/2025 - 15:20

One of the worst earthquakes in European history ripped through Portugal in 1755, causing a tsunami, fires and shaking that killed tens of thousands of people and caused widespread destruction. Another less well-documented earthquake occurred in the same region in 1356, and a more recent 7.9 magnitude earthquake occurred in 1969. The most recent event was recorded by seismic instruments and has been found to have originated from the flat Horseshoe Abyssal Plain, which is not near any known major tectonic faults.

The Pacific's united front on climate action is splintering over deep-sea mining

Phys.org: Earth science - Mon, 09/01/2025 - 14:26

In recent years, Pacific island nations have earned global credibility as champions of climate action. Pacific leaders view sea level rise as an existential threat.

Seaweed on sandy coastlines contributes to greenhouse gas emissions, study shows

Phys.org: Earth science - Mon, 09/01/2025 - 14:08

A team of researchers from Monash University has made a discovery that could reshape our understanding of greenhouse gas emissions from coastal ecosystems. Published in Nature Geoscience, the study reveals sandy coastlines, which make up half the world's continental margins, are a previously overlooked source of methane.

The top hot spots in Tokyo: Revealing the impact of climate change through data fusion

Phys.org: Earth science - Mon, 09/01/2025 - 13:57

Global climate change is making temperatures hotter, particularly in densely populated cities, which can adversely affect the health of residents. While mitigation efforts are urgent, it is hard for urban planners to identify exactly where to target as accurate, long-term climate records created over fine spatial scales have been unavailable.