Which mechanism causes increased stream meandering in regions where the jet stream weakens and becomes more zonal?

💡 Explanation

When the jet stream weakens and becomes more zonal, atmospheric blocking patterns increase because slower zonal winds cause Rossby waves to amplify, leading to prolonged precipitation events concentrated in certain areas. Therefore, increased precipitation leading to greater stream discharge and bank erosion results, rather than other options which depend on different climate mechanisms.

• Which outcome occurs when intense rainfall accelerates podzolization processes?
• Which risk increases when a rhyolitic lava dome nears collapse?
• Which geophysical effect results from weakened trade winds in the equatorial Pacific Ocean during El Niño?
• Which change occurs during subduction when hydrated oceanic crust descends into the mantle?
• Which outcome is accelerated on slopes with high permafrost content when experiencing thawing?
• Which effect accelerates topsoil creep resulting from permafrost thaw in Arctic regions?