%% Created for Guillaume Maze at 2007-12-04 11:04:03 -0500 %% Saved with string encoding Western (ASCII) @string{ag = {Adv.\ Geophys}} @string{ang = {Ann.\ Glaciol.}} @string{ao = {Atmos.\ Ocean}} @string{arfm = {Annu.\ Rev.\ Fluid\ Mech.}} @string{dirlocalurl = {file://localhost/Users/gmaze/web/www/pdf/}} @string{eos = {Eos Trans.\ AGU}} @string{epsl = {Earth Planet.\ Sci.\ Lett.}} @string{gafd = {Geophys.\ Astrophys.\ Fluid\ Dyn.}} @string{gca = {Geochim.\ Cosmochim.\ Acta}} @string{gjras = {Geophys.\ J.\ R.\ Astron.\ Soc.}} @string{grl = {Geophys.\ Res.\ Lett.}} @string{gsab = {Geol.\ Soc.\ Am.\ Bull.}} @string{jaot = {J.\ Atmos.\ Ocean.\ Tech.}} @string{jmr = {J.\ Mar.\ Res.}} @string{jms = {J.\ Mar.\ Sys.}} @string{jot = {J.\ Turbulence }} @string{jpo = {J.\ Phys.\ Oceanogr.}} @string{mnras = {Mon.\ Not.\ R.\ Astron.\ Soc.}} @string{mwr = {Mon.\ Weather Rev.}} @string{nat = {Nature}} @string{npg = {Nonlin.\ Proc.\ Geophys. }} @string{oceano = {Oceano.}} @string{om = {Ocean Modeling}} @string{pal = {Palaeogeogr.\ Palaeoclimatol.\ Palaeoecol.}} @string{paleo = {Paleo.}} @string{pasp = {Publ.\ A.\ S.\ P.}} @string{pepi = {Phys.\ Earth Planet.\ Inter.}} @string{phf = {Phys.\ Fluids}} @string{po = {Prog. in Oceano.}} @string{pr = {Phys.\ Rep.}} @string{pra = {Phys.\ Rev.\ A}} @string{prl = {Phys.\ Rev.\ Lett.}} @string{qjrms = {Q.\ J.\ R.\ Meteorol.\ Soc.}} @string{rg = {Rev.\ Geophys.}} @string{rgd = {Reg.\ Chaot.\ Dyn.}} @string{rmp = {Rev.\ Mod.\ Phys.}} @string{rpp = {Rev.\ Prog.\ Phys.}} @string{rs = {Radio Sci.}} @string{sci = {Science}} @string{tell = {Tellus}} @article{bingham-1992, Author = {Bingham, FM}, Date = {1992}, Date-Added = {2007-12-03 17:41:16 -0500}, Date-Modified = {2007-12-03 17:41:16 -0500}, Journal = {Journal of Geophysical Research}, Number = {C7}, Pages = {11177-11189}, Title = {Formation and spreading of subtropical mode water in the North Pacific}, Volume = {97}, Year = {1992}} @article{bingham-2002, Author = {Bingham, FM and Suga, T and Hanawa, K}, Date = {2002}, Date-Added = {2007-12-03 17:52:10 -0500}, Date-Modified = {2007-12-03 17:52:58 -0500}, Journal = {J. Geophys. Res}, Local-Url = {file://localhost/Users/gmaze/web/web_scripts/pdf/Bingham_et_al.JGR2002.pdf}, Pages = {3073}, Publisher = {16 July 2002.}, Title = {Origin of waters observed along 137E}, Volume = {107}, Year = {2002}} @article{bingham-2006, Author = {Bingham, F. M. and Suga, T.}, Date-Added = {2007-12-03 18:04:43 -0500}, Date-Modified = {2007-12-03 18:05:51 -0500}, Isbn = {1812-0784}, J1 = {OS}, Journal = {Ocean Science}, Local-Url = {file://localhost/Users/gmaze/web/web_scripts/pdf/Bingham_Suga.OS2006.pdf}, Number = {1}, Pages = {61--70}, Publisher = {Copernicus Publications}, Title = {Distributions of mixed layer properties in North Pacific water mass formation areas: comparison of Argo floats and World Ocean Atlas 2001}, Ty = {JOUR}, Url = {http://www.ocean-sci.net/2/61/2006/}, Volume = {2}, Year = {2006}} @article{fine-1994, Author = {Fine, RA and Lukas, R and Bingham, FM and Warner, MJ and Gammon, RH}, Date = {1994}, Date-Added = {2007-12-03 17:42:18 -0500}, Date-Modified = {2007-12-03 17:42:27 -0500}, Journal = {Journal of Geophysical Research}, Local-Url = {file://localhost/Users/gmaze/web/web_scripts/pdf/Fine_et_al.JGR1994.pdf}, Number = {C12}, Pages = {25063-25080}, Title = {The western equatorial Pacific: A water mass crossroads}, Volume = {99}, Year = {1994}} @article{ladd-2000, Author = {Carol Ladd and LuAnne Thompson}, Date-Added = {2006-08-02 16:17:27 -0400}, Date-Modified = {2007-11-06 16:14:54 -0500}, Doi = {10.1175/1520-0485(2000)030<0868:FMFNPC>2.0.CO;2}, Journal = {Journal of Physical Oceanography}, Keywords = {EDW,mode water}, Local-Url = {file://localhost/Users/gmaze/web/web_scripts/pdf/Ladd_Thompson.JPO2000.pdf}, Number = {5}, Pages = {868-887}, Title = {Formation Mechanisms for North Pacific Central and Eastern Subtropical Mode Waters}, Volume = {30}, Year = {2000}} @article{ladd-2001, Abstract = {An isopycnal model coupled with a mixed layer model is used to study transformation and formation rates in the North Pacific. When annual formation rates are averaged over the entire North Pacific, a large peak in water mass formation is found at a density of approximately \&{\#}963;\&{\#}952; = 26 kg m\&{\#}8722;3. This peak in formation rate corresponds to the formation of North Pacific Central Mode Water (CMW) in the model. No corresponding peaks in formation rate are found at the densities of Subtropical Mode Water (STMW; \&{\#}963;\&{\#}952; \&{\#}8764;25.4 kg m\&{\#}8722;3) or Eastern Subtropical Mode Water (ESMW; \&{\#}963;\&{\#}952; \&{\#}8764;24\&{\#}8211;25.4 kg m\&{\#}8722;3) when averaged over the entire model basin. However, when calculated locally, enhanced formation rates are found at the densities of these mode water masses. The formation of each of the three types of North Pacific mode water in the model occurs because of different circumstances. As expected, STMW formation is dependent on the strong cooling and resultant deep mixed layers over the Kuroshio Current region. However, formation rates in the STMW formation region (west of the date line) imply that most of the thickness maximum formed there each winter is subsequently reentrained into the mixed layer during the next winter where it is further cooled, preconditioning it to become denser varieties of STMW farther east. Similarly, preconditioning west of the formation region is important in CMW formation. Only 33{\%} of the STMW escapes reentrainment the next winter. The STMW signature (minimum in vertical stratification) remains in the region in the next winter owing to a tight recirculation that carries the mode water south before the mixed layer deepens again the next winter. The renewal times calculated from the model are 1.5\&{\#}8211;5.5 yr for STMW and approximately 10\&{\#}8211;14 yr for CMW. The ESMW formation is due to a band of weak positive formation combined with a wide layer outcrop. The only region where forcing by the atmosphere can directly influence an isopycnal layer is where the isopycnal layer outcrops into the mixed layer. The wide layer outcrop at ESMW densities (\&{\#}8764;30{${}^\circ$}N, 140{${}^\circ$}W) is at least partially due to weak summer heating in the southeastern part of the formation region. Only 13{\%} of the ESMW volume escapes reentrainment by the mixed layer in the succeeding year contributing to a renewal time of only 1\&{\#}8211;2 yr. }, Author = {Ladd, Carol and Thompson, LuAnne}, Date-Added = {2007-11-16 17:31:17 -0500}, Date-Modified = {2007-11-16 17:31:17 -0500}, Journal = {Journal of Physical Oceanography}, Local-Url = {file://localhost/Users/gmaze/web/web_scripts/pdf/Ladd_Thompson.JPO2001.pdf}, Number = {6}, Pages = {1517--1537 }, Title = {Water Mass Formation in an Isopycnal Model of the North Pacific}, Ty = {JOUR}, Url = {http://dx.doi.org/10.1175%2F1520-0485%282001%29031%3C1517%3AWMFIAI%3E2.0.CO%3B2}, Volume = {31}, Year = {2001}} @article{oconnor-2002, Author = {O'Connor, B.M. and Fine, R.A. and Maillet, K.A. and Olson, D.B.}, Date-Added = {2007-11-06 11:19:14 -0500}, Date-Modified = {2007-11-06 11:19:25 -0500}, Journal = {Deep-Sea Res}, Local-Url = {file://localhost/Users/gmaze/web/web_scripts/pdf/OConnor_et_al.DSR2002.pdf}, Pages = {1571--1590}, Title = {{Formation rates of subtropical underwater in the Pacific Ocean}}, Volume = {49}, Year = {2002}} @article{qinyu-2002, Author = {Qinyu, Liu and Aijun, Pan}, Date-Added = {2007-12-03 18:00:41 -0500}, Date-Modified = {2007-12-03 18:06:43 -0500}, Doi = {10.1007/s11802-002-0022-8}, Journal = {Journal of Ocean University of China (English Edition)}, Number = {1}, Pages = {1--7}, Title = {Recent advances in studies on formation mechanism of subtropical mode water and its climate features in north pacific}, Ty = {JOUR}, Url = {http://dx.doi.org/10.1007/s11802-002-0022-8}, Volume = {1}, Year = {2002}} @article{qiu-2006, Author = {Qiu, Bo and Chen, Shuiming}, Date = {2006}, Date-Added = {2007-09-03 11:28:56 -0400}, Date-Modified = {2007-09-03 11:33:57 -0400}, Journal = {Journal of Physical Oceanography}, Local-Url = {file://localhost/Users/gmaze/web/web_scripts/pdf/Qiu_Chen.JPO2006.pdf}, Pages = {1365-1380}, Title = {Decadal Variability in the Formation of the North Pacific Subtropical Mode Water: Oceanic versus Atmospheric Control}, Year = {2006}} @article{qiu-2007, Author = {Qiu, B. and Chen, S. and Hacker, P.}, Date-Added = {2007-09-03 11:35:43 -0400}, Date-Modified = {2007-09-03 11:37:32 -0400}, Journal = {Journal of Physical Oceanography}, Local-Url = {file://localhost/Users/gmaze/web/web_scripts/pdf/Qiu_et_al.JPO2007.pdf}, Pages = {982-1000}, Title = {Effect of Mesoscale Eddies on Subtropical Mode Water Variability from the Kuroshio Extension System Study (KESS)}, Volume = {37}, Year = {2007}} @article{qu-2002, Abstract = {The annual subduction rate in the North Pacific is estimated using five-day outputs from a high-resolution general circulation model (GCM). Two maxima (>200 m yr\&{\#}8722;1) are found in the western North Pacific: one is responsible for the formation of the subtropical mode water (STMW) and the other for the formation of the central mode water (CMW). A local maximum (>75 m yr\&{\#}8722;1) is also found in the formation region of the eastern subtropical mode water (ESMW). These results are compared with a calculation using the winter mixed layer depth and annual mean velocity fields to examine the effect of mesoscale eddies. Although the mesoscale eddies do not markedly affect the general subduction pattern, they enhance the annual subduction rate by up to 100 m yr\&{\#}8722;1 in the formation region of the STMW/CMW, a 34{\%} increase in a regional average (30{${}^\circ$}\&{\#}8211;44{${}^\circ$}N, 140{${}^\circ$}E\&{\#}8211;170{${}^\circ$}W). Further analysis shows that the effects of the mean seasonal cycle and smaller-scale (<30 days) eddies are generally small. The authors suggest that the two peaks in the subduction rate are related to a double-front structure on the intergyre boundary in the western North Pacific. }, Author = {Qu, Tangdong and Xie, Shang-Ping and Mitsudera, Humio and Ishida, Akio}, Date-Added = {2007-11-16 17:31:26 -0500}, Date-Modified = {2007-11-16 17:31:26 -0500}, Journal = {Journal of Physical Oceanography}, Local-Url = {file://localhost/Users/gmaze/web/web_scripts/pdf/Qu_et_al.JPO2002.pdf}, Number = {3}, Pages = {746--763 }, Title = {Subduction of the North Pacific Mode Waters in a Global High-Resolution GCM*}, Ty = {JOUR}, Url = {http://dx.doi.org/10.1175%2F1520-0485%282002%29032%3C0746%3ASOTNPM%3E2.0.CO%3B2}, Volume = {32}, Year = {2002}} @article{rainville-2007, Author = {Rainville, L. and Jayne, SR and McClean, JL and Maltrud, ME}, Date-Added = {2007-10-18 17:55:01 -0400}, Date-Modified = {2007-10-18 17:55:20 -0400}, Journal = {Ocean Modelling}, Local-Url = {file://localhost/Users/gmaze/web/web_scripts/pdf/Rainville_et_al.OCMOD2007.pdf}, Number = {4}, Pages = {338--356}, Publisher = {Elsevier}, Title = {{Formation of Subtropical Mode Water in a high-resolution ocean simulation of the Kuroshio Extension region}}, Volume = {17}, Year = {2007}} @article{suga-1989, Author = {Suga, T and Hanawa, K and Toba, Y}, Date-Added = {2007-12-03 17:51:59 -0500}, Date-Modified = {2007-12-03 17:54:43 -0500}, Journal = {Journal of Physical Oceanography}, Local-Url = {file://localhost/Users/gmaze/web/web_scripts/pdf/Suga_et_al.JPO1989.pdf}, Number = {10}, Pages = {1605-1618}, Publisher = {American Meteorological Society}, Title = {Subtropical Mode Water in the 137E Section}, Volume = {19}, Year = {1989}} @article{suga-1997, Abstract = {The upper thermal structure of the midlatitude North Pacific is studied with the use of all the bathythermograph data compiled in the global ocean temperature and salinity profiles released by the National Oceanographic Data Center. Climatological temperature data are prepared for each 2.5{${}^\circ$} {$\times$} 5{${}^\circ$} (latitude {$\times$} longitude) rectangle. The upper layer of the subtropical gyre is characterized by two types of thermostads or mode waters: one in the western basin known as North Pacific subtropical mode water (NPSTMW) and the other in the central basin to be named North Pacific central mode water (NPCMW). The NPCMW thermostad lies centered around 160{${}^\circ$}W between the Kuroshio Extension and the Kuroshio bifurcation front. Its local core temperature ranges from 10{${}^\circ$} to 13{${}^\circ$}C with a somewhat zonally elongated pattern, in contrast to the more uniform core temperature at 16{${}^\circ$}\&{\#}8211;17{${}^\circ$}C of the NPSTMW thermostad lying centered at 150{${}^\circ$}\&{\#}8211;160{${}^\circ$}E south of the Kuroshio Extension. The climatological map of the wintertime mixed layer thickness together with sea surface temperature distribution indicates that the NPCMW formation area is likely situated south of the Kuroshio bifurcation front and at 175{${}^\circ$}E\&{\#}8211;160{${}^\circ$}W extending as far south as about 37{${}^\circ$}N around 170{${}^\circ$}W. The climatological geostrophic flow field suggests that the NPCMW thermostad is spread from its formation area by the North Pacific Current flowing primarily eastward with relatively small southward velocity, which is contrasted with the NPSTMW thermostad spread within the anticyclonic Kuroshio recirculation region and explains the rather zonally elongated temperature distribution of NPCMW. The NPCMW formation can be fit into the recent estimation of the subduction rate of the main thermocline, coinciding with the region of the moderate subduction rate dominated by the lateral induction term. }, Author = {Suga, Toshio and Takei, Yukiko and Hanawa, Kimio}, Date-Added = {2007-11-16 17:31:07 -0500}, Date-Modified = {2007-11-16 17:31:07 -0500}, Journal = {Journal of Physical Oceanography}, Local-Url = {file://localhost/Users/gmaze/web/web_scripts/pdf/Suga_et_al.JPO1997.pdf}, Number = {1}, Pages = {140--152 }, Title = {Thermostad Distribution in the North Pacific Subtropical Gyre: The Central Mode Water and the Subtropical Mode Water}, Ty = {JOUR}, Url = {http://dx.doi.org/10.1175%2F1520-0485%281997%29027%3C0140%3ATDITNP%3E2.0.CO%3B2}, Volume = {27}, Year = {1997}} @article{tsujino-2004, Abstract = {Formation and circulation of mode waters in the subtropical North Pacific are investigated by performing a numerical simulation with a high-resolution general circulation model. In the model, important features for forming mode waters, such as separation of western boundary currents, frontal systems, mixed layer processes, and eddy activities, are well reproduced. Annual subduction rates, calculated by following the mixed layer base, have major peaks in three density ranges and are related to the deep winter mixed layer at the south of the fronts in the western North Pacific, that is, the Kuroshio Extension with a winter surface density of 25.5 \&{\#}963;\&{\#}952;, the Kuroshio bifurcation front (26.2 \&{\#}963;\&{\#}952;), and the subarctic front (26.5 \&{\#}963;\&{\#}952;). The lightest peak corresponds to the Subtropical Mode Water (STMW). It is formed at the south of the Kuroshio Extension and enters the main pycnocline as it crosses the mixed layer depth (MLD) front to the south. The remaining two peaks correspond to the Central Mode Water (CMW). The lighter one may be called the lighter variety of CMW (LCMW); it is formed at the south of the Kuroshio bifurcation front and enters the main pycnocline as it crosses the MLD front to the east. The heavier one may be called the denser variety of CMW (DCMW); it is formed at the south of the subarctic front and enters the main pycnocline as it crosses the MLD front to the east. A large heat loss at the sea surface in the western North Pacific is important for STMW formation, while low stability in the subsurface layer, as well as a large heat loss, is important for CMW formation. Among the waters that are subducted in the subtropics, the cores of STMW and LCMW circulate around the wind-driven subtropical gyre, while those at the outer edge of the gyre, which include DCMW, enter the Tropics via the western half of the tropical\&{\#}8211;subtropical gyre boundary. They amount to about 26 Sv (Sv \&{\#}8801; 106 m3 s\&{\#}8722;1), which is determined by the northward surface Ekman transport at the boundary. }, Author = {Tsujino, Hiroyuki and Yasuda, Tamaki}, Date-Added = {2007-11-16 11:06:36 -0500}, Date-Modified = {2007-11-16 11:07:04 -0500}, Journal = {Journal of Physical Oceanography}, Local-Url = {file://localhost/Users/gmaze/web/web_scripts/pdf/Tsujino_Yasuda.JPO2004.pdf}, Number = {2}, Pages = {399--415 }, Title = {Formation and Circulation of Mode Waters of the North Pacific in a High-Resolution GCM}, Ty = {JOUR}, Url = {http://dx.doi.org/10.1175%2F1520-0485%282004%29034%3C0399%3AFACOMW%3E2.0.CO%3B2}, Volume = {34}, Year = {2004}} @article{uehara-2003, Adsnote = {Provided by the Smithsonian/NASA Astrophysics Data System}, Adsurl = {http://adsabs.harvard.edu/abs/2003GeoRL..30m..38U}, Author = {{Uehara}, H. and {Suga}, T. and {Hanawa}, K. and {Shikama}, N. }, Date-Added = {2007-11-16 17:34:54 -0500}, Date-Modified = {2007-11-16 17:35:43 -0500}, Journal = {Geophysical Research Letters}, Local-Url = {file://localhost/Users/gmaze/web/web_scripts/pdf/Uehara_et_al.GRL2003.pdf}, Pages = {38-1}, Title = {{A role of eddies in formation and transport of North Pacific Subtropical Mode Water}}, Volume = 30, Year = 2003} @article{yasuda-1997, Abstract = {Temporal changes in the properties of the North Pacific subtropical mode water (NPSTMW) and the North Pacific central mode water (NPCMW), which occurred around the mid-1970s, are investigated using temperature data composited for the two decades bounded by the mid-1970s: 1966\&{\#}8211;75 and 1976\&{\#}8211;85. Properties of these mode waters changed greatly after the mid-1970s. The colder NPCMW was formed and widely distributed during 1976\&{\#}8211;85. In the NPSTMW formation area, warmer water occupied the southwestern part, and colder water occupied the northeastern part during 1976\&{\#}8211;85. The cause of this change is discussed with regard to the heat flux and wind stress data. The cooling can be explained as a result of changes in surface heat flux and heat divergence in the Ekman layer, that is, a larger amount of heat released from the ocean surface and an increased southward Ekman transport of cold water due to intensification of the westerlies. In particular, the latter plays a dominant role in the observed cooling. On the other hand, the warming in the southwestern part of the NPSTMW area cannot be explained by the above mechanism alone. Time series of the Sverdrup transport, the Kuroshio transport, and the thermal structure of the upper ocean reveal that the subtropical gyre intensified after the mid-1970s, suggesting that increased advection of warm water by the Kuroshio from lower latitudes to the south of Japan contributed to the observed warming. }, Author = {Yasuda, Tamaki and Hanawa, Kimio}, Date-Added = {2007-11-16 17:31:12 -0500}, Date-Modified = {2007-11-16 17:31:12 -0500}, Journal = {Journal of Physical Oceanography}, Local-Url = {file://localhost/Users/gmaze/web/web_scripts/pdf/Yasuda_Hanawa.JPO1997.pdf}, Number = {6}, Pages = {858--870 }, Title = {Decadal Changes in the Mode Waters in the Midlatitude North Pacific}, Ty = {JOUR}, Url = {http://dx.doi.org/10.1175%2F1520-0485%281997%29027%3C0858%3ADCITMW%3E2.0.CO%3B2}, Volume = {27}, Year = {1997}} @article{yasuda-2003, Author = {Yasuda, T and Kitamura, Y}, Date = {2003}, Date-Added = {2007-12-03 17:49:01 -0500}, Date-Modified = {2007-12-03 17:49:08 -0500}, Journal = {Journal of Oceanography}, Local-Url = {file://localhost/Users/gmaze/web/web_scripts/pdf/Yasuda_Kitamura.JOC2003.pdf}, Number = {3}, Pages = {279-290}, Publisher = {Springer}, Title = {Long-Term Variability of North Pacific Subtropical Mode Water in Response to Spin-Up of the Subtropical Gyre}, Volume = {59}, Year = {2003}} @comment{BibDesk Static Groups{ group name Annular Modes keys thompson-2000b,limpasuvan-2000,white-2004b,ring-2007,thompson-2000,meredith-2004,marshall-2003,cash-2002,kuroda-2005,lefebvre-2004,limpasuvan-1999,hall-2002,marshall-2006b,meredith-2006 group name Antarctic Circumpolar Wave keys white-2004a,white-2000a,white-1996,motoi-1998,white-1999,cai-1999,qiu-1997,haarsma-2000,gloersen-2001,white-1998,venegas-2003,connolley-2002,fischer-2004,white-2002d,white-2002c,cai-2001,white-2002a,white-2006,white-2001,baines-2000,christoph-1998,colin-2001,carril-2001,jacobs-1996,white-2004c,park-2004,peterson-1998 group name Atm response to external forcing keys czaja-2002,ting-1995,kushnir-2002,shutts-1987,maze-2006b,maze-2007,peng-1999,maze-2007b,miller-1994,peng-1995,kushner-2001,hoerling-2002,ring-2007,lunkeit-1997,peng-1997,ferreira-2005,white-2002c,inatsu-2003,czaja-1999,peng-2001,smagorinsky-1953,hoskins-1981,kushnir-1996,pena-2004,hall-2001a,white-2004a group name Mode waters keys walin-1982,marsh-2005,donners-2005,old-2006,dewar-2005,csanady-1975,oconnor-2002,paiva-2002,talley-1982,garret-1995,hazeleger-1999,forget-2008,hanawa-2001,mccartney-1982,speer-1995,tsujino-2004,climode-proposal,marshall-1993b,thomas-2005,speer-1992,worthington-1976,marshall-1988,ladd-2000,marshall-1999c,alexander-1995,marshall-2005,kwon-2004,worthington-1959,joyce-2000,maze-2008a,rainville-2007,marshall-1999,qiu-2007,hazeleger-1998,tziperman-1986,tandon-2001,peng-2006,worthington-1972,ebbesmeyer-1986,cirovecki-2007,qiu-2006 group name Mode waters: Atlantic keys old-2006,worthington-1959,paiva-2002,talley-1982,peng-2006,marshall-2005,ebbesmeyer-1986,khatiwala-2002,marshall-1993b,kwon-2004,speer-1992,marsh-2005,joyce-2000,donners-2005,climode-proposal,worthington-1976,marshall-1999c,garret-1995 group name Mode waters: Pacific keys yasuda-2003,ladd-2000,suga-1989,uehara-2003,bingham-2006,qiu-2006,qu-2002,ladd-2001,rainville-2007,bingham-1992,yasuda-1997,suga-1997,fine-1994,qiu-2007,bingham-2002,qinyu-2002,tsujino-2004,oconnor-2002 }}