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 Kehui (Kevin) Xu 


 

Research Interests

  • Sediment Transport From Rivers to Estuaries, Coasts and Continental Shelves
  • Numerical Modeling of Sediment Transport Using Regional Ocean Modeling System (ROMS)
  • Sequence Stratigraphy (CHIRP Seismic Profiling) and Sedimentary Geology [link to Stratigraphy Result]
  • Clay Mineralogy, X-Ray Diffraction (XRD)

Research Projects

1. NOAA - MMS co-funded Northern Gulf of Mexico Ecosystem Research Program (NGOMEX) , which is examining how physical, geochemical, and sedimentological processes impact hypoxia in the Gulf of Mexico.

My part involves developing a three-dimensional sediment transport model (ROMS) for the Texas / Louisiana coast and interfacing the sediment calculations with a biogeochemical model.
Mechanisms Controlling Hypoxia (MCH)
Model Result Link

2. NSF Margins S2S Program - Gulf of Papua

My part involves the XRD mineral analysis on sediment provenances and redistribution process in the Gulf of Papua

3. ONR, Yangtze River and East China Sea

My Ph.D. dissertation involved spatial and temporal variations on the water and sediment discharge from the Yangtze River to the inner shelf of East China Sea, as well as structure and formation of the Yangtze-derived Holocene Clinoform in the Inner Shelf.

[link, chapters of dissertation]

[Animation link, Yangtze and Taiwan sediment flux]


4. ONR, Flux and Fate of River-Derived Sediments from Taiwan to the Taiwan Strait (PI, Drs. Milliman and Liu)

 

Collaborators

  • John D. Milliman (VIMS, Ph.D. Advisor)
  • Courtney Harris (VIMS, Current Postdoc Supervisor)
  • Neal Driscoll (Scripps Institution of Oceanography)
  • Rudy Slingerland (Pennsylvania State University)
  • J. Paul Liu (North Carolina State University)
  • Katherine Farnsworth (Indiana University of Pennsylvania)
  • Phil Jones (University of East Anglia, UK)
  • Laurence Smith (University of California-Los Angles)
  • Steve DiMarco (Texas A&M University)
  • Rob Hetland (Texas A&M University)
  • Katja Fennel (Dalhousie University)
  • S. J. Kao (Academia Sinica, Taiwan),
  • Saulwood Lin (National Taiwan University)
  • Z. S. Yang (Ocean University of China)
  • A.C. Li and S.M. Wan (Institute of Oceanology, Chinese Academy of Sciences)
  • Z. Chen and J. Chen (East China Normal University)

Thesis

  • Ph.D. Dissertation, Linking Land to Ocean: Flux and Fate of Water and Sediment from the Yangtze River to the East China Sea, 2006

  • Master thesis, Study of framework and key technology of Yellow River Geographic Information System, 2002
  • Bachelor thesis, Information System of Marine Environment --- Database Construction, 1999

Data Processing and Computer Skills

  • Seismic Data Processing: 3-D Seismic Data Interpretation, IVS Fledermaus, IView3D, Edgetech Discover, High-resolution Chirp Seismic Profiling
  • Programming: Matlab, Visual Fortran, Visual Basic, Turbo C/C++, FoxBase, Html, Linux/Unix
  • Image Processing: Adobe Photoshop, Adobe Illustrator, Golden Surfer, Golden Grapher, Coreldraw
  • GIS: ArcView, ArcGIS, MapObjects, MapInfo
  • Remote Sensing: ENVI, IDL

Publications (In-preparation, Submitted, and Published)

  • Xu, K.H., Liu, J. P., Milliman, J.D., Li, A.C., Yang, Z.S. and Xiao S.B., Structure and Formation of the Yangtze-derived Holocene Clinoform, Inner Shelf of the East China Sea, in preparation.[link to Stratigraphy Result]
  • Milliman, J.D., Xu, K.H., Slingerland, R. L, Driscoll, N. W. and Johnstone, E.A., Sediment mineralogy on the Gulf of Papua Clinoform: New insights into sediment source and redistribution, prepared for Geology.
  • Xu, K.H., Milliman, J.D., Li, A.C., Liu, J. P., Wan, S.M.and Kao, S.J., Yangtze- and Taiwan-Derived Sediments in the Inner Shelf of East China Sea, prepared for Continental Shelf Research.
  • Xu, K.H. and Milliman, J.D., Drastically declined sediment discharge from the Yangtze River (Changjiang) before and after the impoundment of the Three Gorges Dam, prepared for Journal of Hydrology.
  • Milliman, J.D., Farnsworth, F.L., Smith, L.D., Xu, K.H. and Jones, P.D.,2008. Climatic and Anthropogenic Factors Affecting River Discharge to the Global Ocean, 1951-2000. Global and Plantary Change, 62(3-4),187-194.[link] [pdf]
  • Xu, K.H., Milliman, J.D., Yang, Z.S. and Xu, H., 2008. Climatic and Anthropogenic Impacts on the Water and Sediment Discharge from the Yangtze River (Changjiang), 1950-2005. In: Avijit Gupta (Editor), Large Rivers: Geomorphology and Management: John Wiley & Sons. pp. 609-626. [pdf]
  • Wan, S.M., Li, A.C., Xu, K. H. and Yin, X. M., 2008. Characteristics of clay minerals in the northern South China Sea and its implications for evolution of East Asian Monsoon since Miocene, Journal of China University of Geosciences, 19(1), 23-37. [pdf]
  • Liu, J.P., Xu, K.H., Li, A.C., Milliman, J.D., Velozzi, D.M., Xiao, S.B. and Yang, Z.S., 2007. Flux and Fate of Yangtze River Sediment Delivered to the East China Sea. Geomorphology , 85(3-4), 208-224. [link] [pdf]
  • Xu, K.H., 2006. Linking Land to Ocean: Flux and Fate of Water and Sediment from the Yangtze River to the East China Sea. Ph.D. Dissertation, The College of William & Mary, pp174. [intro]
  • Xu, K.H., Milliman, J.D., Yang, Z.S. and Wang, H.J., 2006. Yangtze Sediment Decline Partly from Three Gorges Dam. EOS, 87(19): 185,190. [link] [pdf]
  • Liu, J.P., Li, A.C., Xu, K.H., Yang, Z.S., Velozzi, D.M., Milliman, J.D. and DeMaster, D.J., 2006. Sedimentary features of the Yangtze River-derived alongshore clinoform deposit in the East China Sea. Continental Shelf Research, 26, 2141-2156. [link] [pdf]
  • Yang, Z., Wang, H., Saito, Y., Milliman, J. D., Xu, K.H., Qiao, S., and Shi, G., 2006. Dam impacts on the Changjiang (Yangtze) River sediment discharge to the sea: The past 55 years and after the Three Gorges Dam, Water Resources Research, 42, W04407, doi:10.1029/2005WR003970. [link] [pdf]
  • Chu, Z.X., Sun, X.G., Zhai, S.K. and Xu, K.H., 2006. Changing pattern of accretion/erosion of the modern Yellow River (Huanghe) subaerial delta, China: Based on remote sensing images. Marine Geology, 227(1-2): 13-30. [link] [pdf]
  • Xiaogong Sun, Kehui Xu, Zhongxin Chu and Haiting Huang, 2004. Visualization of Drilling Data in Coastal Zones, Journal of Ocean University of China, 34(5), 881-885 (in Chinese). [link]
  • Kehui Xu, Xiaogong Sun, Zhan Liu and Landi Feng, 2002. Critical Technique of Coastal Zone Geographical Information System Based on Components GIS MapObjects, Journal of Ocean University of China, 32(5), 770-776 (in Chinese). [link]
  • Landi Feng, Xiaogong Sun and Kehui Xu, 2002, Edge Detection of Coastal Line of Remote Sensing Images Based on Wavelet Transform Method, Journal of Ocean University of China, 32(5), 777-781 (in Chinese).[link]

Conference Presentations and Posters

  • Xu, K.H., Harris Courtney, Hetland Robert and Kaihatu James. 2008. Sediment Transport From The Mississippi and Atchafalaya Rivers To The Louisiana/Texas Shelf, AGU Ocean Sciences Meeting, Orlando, FL.
  • Xu, K.H., Harris Courtney, Hetland Robert and Kaihatu James. 2007. Toward a Sediment Transport Model of the Louisiana / Texas Shelf. ERF Meeting, Providence, RI. [Presentation link]
  • Xu, K.H., Harris Courtney, Hetland Robert and Kaihatu James. 2007. Sediment Transport From The Mississippi and Atchafalaya Rivers To The Louisiana/Texas Shelf. George Bush China-U.S. Relations Conference: Development, Energy, and Security, Washington, D.C.
  • Xu, K.H., 2007. Mineralogical Analysis of Sediment Sources and Redistribution Processes in the East China Sea and Gulf of Papua, Pennsylvania State University.
  • Xu, K.H., Milliman, J.D., Liu, J., and Li, A., 2006. Sediment mineralogy and provenance in the inner shelf mud wedge of the East China Sea, AGU Ocean Science Meeting, Honolulu, Hawaii. [link]
  • Milliman, J.D., Xu, K.H., Brunskill, G., Slingerland, R. L. and Driscoll, N. W, 2006. Sediment mineralogy on the Gulf of Papua Clinoform: New insights into sediment sources and redistribution processes, AGU Ocean Science Meeting, Honolulu, Hawaii. [link]
  • Li, A., Liu, J., Xiao, S.B., Milliman, J.D. and Xu, K.H., 2006. Mud Wedge in The Inner Shelf of East China Sea and Its Paleoenvironmental Significance, AGU Ocean Science Meeting, Honolulu, Hawaii. [link]
  • Xu, K.H., Milliman, J.D., Liu, J., and Li, A., 2006, Yangtze- and Taiwan- derived sediments in the inner shelf the East China Sea. MARGINS Source-to-Sink Theoretical and Experimental Institute - Teleconnections Between Source and Sink in Sediment Dispersal Systems, Eel River Basin, California