Discovering 43,000 Seamounts: Insights from Satellite Scans of Sea Levels

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In summary, Scientists have discovered over 43,000 seamounts using satellite scans of sea levels. These underwater mountains play a vital role in ocean ecosystems and have implications for ocean research, conservation, and industries such as fishing and shipping.
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BillTre
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There's a whole lot of seamounts out there (news article from Science):

Screenshot 2023-04-20 at 12.25.45 PM.png

They were found by looking for where sea levels mounded up around the seamounts (due to their gravity) in satellite scans of sea levels.
 
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Sure beats finding them one at a time by smacking them with submarines. (USS San Francisco, USS Connecticut)
 
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What are seamounts and why are they important?

Seamounts are underwater mountains formed by volcanic activity. Despite being submerged, they often reach significant heights, some nearly reaching the ocean surface. They are important because they serve as hotspots for marine biodiversity, providing habitats for numerous species of fish and marine organisms. Seamounts also influence ocean currents and can affect nutrient distribution in the water, which impacts global marine ecosystems.

How were the 43,000 seamounts discovered?

The discovery of 43,000 seamounts was made possible through satellite scans of sea levels. Satellites equipped with radar altimetry technology measure the bumps and dips on the ocean surface. These variations in sea level can indicate the presence of underwater features like seamounts. Advanced algorithms and data processing techniques were used to analyze these measurements and map the seamounts.

What technology was used to scan and analyze the sea levels?

The primary technology used in this discovery was satellite radar altimetry. This technology involves bouncing radar waves off the surface of the ocean to measure the time it takes for the waves to return to the satellite. The data collected allows scientists to calculate sea surface heights very precisely. These measurements help in detecting anomalies on the ocean surface that suggest the presence of seamounts below.

What impact does the discovery of these seamounts have on our understanding of the ocean?

The discovery of these 43,000 seamounts significantly enhances our understanding of the ocean's topography and its complex ecosystems. It provides new insights into the distribution of underwater mountains, which are crucial for marine life. This knowledge helps in the conservation and management of marine resources and biodiversity. Additionally, understanding seamount locations helps in better predicting ocean currents and climate models.

How will this information be used in future marine research and conservation efforts?

This extensive dataset of seamount locations will be instrumental in future marine research, particularly in studying ecological hotspots and assessing environmental impacts. Conservation efforts can be more targeted and effective, focusing on protecting these biodiverse ecosystems. Furthermore, this information will aid in safer navigation for submarines and other underwater vehicles by providing detailed maps of the ocean floor.

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