This leads to the hypothesis that only small amounts of water, present at depth within the mantle (on the order of 0.1 wt%), will lead to significant seismic attenuation and could potentially explain the anomalously low Q·¹ values which extend over a broad region in the mantle below Northeast Asia.
The hypothesis posits that trace amounts of water, found at significant depths within the mantle (approximately 0.1 wt%), could significantly reduce seismic wave propagation and may explain the diminished Q·¹ values detected over an extensive region in the mantle below Northeast Asia.