scholarly journals Age of the Subducting Philippine Sea Slab and Mechanism of Low‐Frequency Earthquakes

2018 ◽  
Vol 45 (5) ◽  
pp. 2303-2310 ◽  
Author(s):  
Yuanyuan Hua ◽  
Dapeng Zhao ◽  
Yixian Xu ◽  
Xin Liu
Keyword(s):  
Low Frequency ◽  
Philippine Sea ◽  
Philippine Sea Slab

Vertical directionality of low‐frequency ambient noise in the Philippine Sea.

2010 ◽  
Vol 128 (4) ◽  
pp. 2387-2387
Author(s):  
Kathleen E. Wage ◽  
Matthew A. Dzieciuch ◽  
Peter F. Worcester
Keyword(s):  
Ambient Noise ◽  
Low Frequency ◽  
Philippine Sea

Theoretical fluctuation predictions for low-frequency acoustical propagation ranges of 25 to 107 km in the 2009-2010 Philippine Sea experiment

2012 ◽  
Vol 131 (4) ◽  
pp. 3354-3354
Author(s):  
Rex Andrew ◽  
Andrew White ◽  
James Mercer ◽  
Peter Worcester ◽  
Matthew Dzieciuch ◽  
...  
Keyword(s):  
Low Frequency ◽  
Philippine Sea

scholarly journals Observations of low-frequency, long-range acoustic propagation in the Philippine Sea and comparisons with mode transport theory

2020 ◽  
Vol 147 (2) ◽  
pp. 877-897
Author(s):  
Tarun K. Chandrayadula ◽  
Sivaselvi Periyasamy ◽  
John A. Colosi ◽  
Peter F. Worcester ◽  
Matthew A. Dzieciuch ◽  
...  
Keyword(s):  
Long Range ◽  
Transport Theory ◽  
Low Frequency ◽  
Acoustic Propagation ◽  
Philippine Sea

Measured low frequency intensity fluctuations over a 107 km path in the 2009-2010 Philippine Sea experiment

2012 ◽  
Vol 131 (4) ◽  
pp. 3354-3354
Author(s):  
Andrew W. White ◽  
Rex K. Andrew ◽  
James A. Mercer ◽  
Peter F. Worcester ◽  
Matthew A. Dzieciuch
Keyword(s):  
Low Frequency ◽  
Philippine Sea ◽  
Intensity Fluctuations ◽  
Frequency Intensity

State estimates and forecasts of the northern Philippine Sea circulation including ocean acoustic travel times

2021 ◽  
Author(s):  
Ganesh Gopalakrishnan ◽  
Bruce D. Cornuelle ◽  
Matthew R. Mazloff ◽  
Peter F. Worcester ◽  
Matthew A. Dzieciuch
Keyword(s):  
General Circulation ◽  
Mesoscale Eddy ◽  
Low Frequency ◽  
Circulation Model ◽  
The State ◽  
Sea Surface ◽  
Massachusetts Institute Of Technology ◽  
Travel Times ◽  
Philippine Sea ◽  
Institute Of Technology

AbstractThe 2010–2011 North Pacific Acoustic Laboratory (NPAL) Philippine Sea experiment measured travel times between six acoustic transceiver moorings in a 660–km diameter ocean acoustic tomography array in the Northern Philippine Sea (NPS). The travel-time series compare favorably with travel times computed for a yearlong series of state estimates produced for this region using the Massachusetts Institute of Technology general circulation model–Estimating the Circulation and Climate of the Ocean four-dimensional variational (MITgcm-ECCO 4DVAR) assimilation system constrained by satellite sea surface height and sea surface temperature observations and by Argo temperature and salinity profiles. Fluctuations in the computed travel times largely match the fluctuations in the measurements caused by the intense mesoscale eddy field in the NPS, providing a powerful test of the observations and state estimates. The computed travel times tend to be shorter than the measured travel times, however, reflecting a warm bias in the state estimates. After processing the travel times to remove tidal signals and extract the low-frequency variability, the differences between the measured and computed travel times were used in addition to SSH, SST, and Argo temperature and salinity observations to further constrain the model and generate improved state estimates. The assimilation of the travel times reduced the misfit between the measured and computed travel times, while not increasing the misfits with the other assimilated observations. The state estimates that used the travel times are more consistent with temperature measurements from an independent oceanographic mooring than the state estimates that did not incorporate the travel times.

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