Evidence for partial melt in the crust beneath Mt

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Presentation transcript:

Evidence for partial melt in the crust beneath Mt Evidence for partial melt in the crust beneath Mt. Paektu (Changbaishan), Democratic People’s Republic of Korea and China by Ri Kyong-Song, James O. S. Hammond, Ko Chol-Nam, Kim Hyok, Yun Yong-Gun, Pak Gil-Jong, Ri Chong-Song, Clive Oppenheimer, Kosima W. Liu, Kayla Iacovino, and Ryu Kum-Ran Science Volume 2(4):e1501513 April 15, 2016 Copyright © 2016, The Authors

Fig. 1 Station locations. Station locations. Seismic stations used in the RF study (red circles). DPRK stations are Jang Gun Peak (JGPD), Paektu Bridge (PDBD), Mudu Peak (MDPD), Sin Mu Song (SMSD), Paek San Ri (PSRD), and Sing Hung Ri (SHRvD). Ri Kyong-Song et al. Sci Adv 2016;2:e1501513 Copyright © 2016, The Authors

Fig. 2 Example RFs. Example RFs. (A and B) All RFs generated at stations PDBD (A) and SHRD (B). Three-digit number between radial and transverse components refers to the earthquake back azimuth. Ri Kyong-Song et al. Sci Adv 2016;2:e1501513 Copyright © 2016, The Authors

Fig. 3 H-κ stacking results. H-κ stacking results. (A) PDBD. (B) MDPD. (C) SMSD. (D) PSRD. (E) SHRD. Ri Kyong-Song et al. Sci Adv 2016;2:e1501513 Copyright © 2016, The Authors

Fig. 4 RF migrations beneath Mt. Paektu. RF migrations beneath Mt. Paektu. (A) Map shows stations (red circles) and piercing points (blue circles) at the crust-mantle boundary (assuming a crustal thickness of 35 km and an IASP91 velocity model). (B) Elevation along profile A-A′ shown in (A). (C) VP/VS estimated from H-κ stacking [blue circles are related to the crustal thickness solution in (D) and red stars are related to the crustal thickness in (E)]. (D) RF migrations assuming a crustal velocity with the lower VP/VS solution at PDBD and MDPD. (E) RF migrations assuming a crustal velocity with the higher VP/VS solution at PDBD and MDPD. Ri Kyong-Song et al. Sci Adv 2016;2:e1501513 Copyright © 2016, The Authors