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Volumn 45, Issue 6, 1998, Pages 903-930

Chlorofluoromethane distributions in the deep equatorial Atlantic during January-March 1993

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EID: 0031818882     PISSN: 09670637     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0967-0637(98)00003-X     Document Type: Article
Times cited : (43)

References (62)
  • 1
    • 0031853052 scopus 로고    scopus 로고
    • Hydrographic sections across the Atlantic at 7°30N and 4°30S
    • Arhan, M., Mercier, H., Bourlès, B., Gouriou, Y., 1998. Hydrographic sections across the Atlantic at 7°30N and 4°30S. Deep Sea Research I 45, 829-872.
    • (1998) Deep Sea Research I , vol.45 , pp. 829-872
    • Arhan, M.1    Mercier, H.2    Bourlès, B.3    Gouriou, Y.4
  • 2
    • 24844453900 scopus 로고
    • Mesures des chorofluorométhanes
    • Recueil de données CTDO2, Traceurs géochimiques (1), Documents Scientifiques du Centre ORSTOM de Cayenne, No. O.P. 15
    • Andrié, C., Ternon, J.F., 1994. Mesures des chorofluorométhanes in: Campagne CITHER 1. Recueil de données CTDO2, vol. 3/4, Traceurs géochimiques (1), Documents Scientifiques du Centre ORSTOM de Cayenne, No. O.P. 15, pp. 67-77.
    • (1994) Campagne CITHER 1 , vol.3-4 , pp. 67-77
    • Andrié, C.1    Ternon, J.F.2
  • 3
    • 0027884170 scopus 로고
    • Deep currents and the eastward salinity tongue in the equatorial Atlantic: Results from an eddy-resolving, primitive equation model
    • Böning, C., Schott, F., 1993. Deep currents and the eastward salinity tongue in the equatorial Atlantic: results from an eddy-resolving, primitive equation model. Journal of Geophysical Research 98, 6991-6999.
    • (1993) Journal of Geophysical Research , vol.98 , pp. 6991-6999
    • Böning, C.1    Schott, F.2
  • 4
    • 0029904499 scopus 로고    scopus 로고
    • Inhtermediate layer water masses in the western tropical Atlantic Ocean
    • Bub, F.L., Brown, W.S., 1996. Inhtermediate layer water masses in the western tropical Atlantic Ocean. Journal of Geophysical Research 101, 11903-11922.
    • (1996) Journal of Geophysical Research , vol.101 , pp. 11903-11922
    • Bub, F.L.1    Brown, W.S.2
  • 7
    • 0028565496 scopus 로고
    • Western boundary currents and transports off French Guiana as inferred from Pegasus observations
    • Colin, C., Bourlès, B., 1994. Western boundary currents and transports off French Guiana as inferred from Pegasus observations. Oceanologica Acta 17, 143-157.
    • (1994) Oceanologica Acta , vol.17 , pp. 143-157
    • Colin, C.1    Bourlès, B.2
  • 8
    • 24844440598 scopus 로고
    • Recueil de données. Mesures "en route", Courantométrie ADCP et PEGASUS. Documents scientifiques No: O.P. 14, Centre ORSTOM de Cayenne
    • Colin, C., Reppin, J., Bourlès, B., 1994a. Mesures de courants avec le profileur Pegasus. In: Campagne CITHER 1. Recueil de données. Vol. 1/4; Mesures "en route", Courantométrie ADCP et PEGASUS. Documents scientifiques No: O.P. 14, Centre ORSTOM de Cayenne, pp. 145-161.
    • (1994) Mesures de Courants Avec le Profileur Pegasus Campagne CITHER 1 , vol.1-4 , pp. 145-161
    • Colin, C.1    Reppin, J.2    Bourlès, B.3
  • 9
    • 0028595077 scopus 로고
    • Western boundary current variability off French Guiana from moored current measurements
    • Colin, C., Bourlès, B., Chuchla, R., Dangu, F., 1994b. Western boundary current variability off French Guiana from moored current measurements. Oceanologica Acta 17, 345-354.
    • (1994) Oceanologica Acta , vol.17 , pp. 345-354
    • Colin, C.1    Bourlès, B.2    Chuchla, R.3    Dangu, F.4
  • 10
    • 0001163164 scopus 로고
    • Deep, water renewal in the north Atlantic
    • Dickson, R.R., Gmitrowitz, E.M., Watson, A.L., 1990. Deep, water renewal in the north Atlantic. Nature 344, 848-850.
    • (1990) Nature , vol.344 , pp. 848-850
    • Dickson, R.R.1    Gmitrowitz, E.M.2    Watson, A.L.3
  • 11
    • 0028194023 scopus 로고
    • The production of North Atlantic Deep Water: Sources, rates and pathways
    • Dickson, R.R., Brown J., 1994. The production of North Atlantic Deep Water: Sources, rates and pathways. Journal of Geophysical Research 99, 12319-12341.
    • (1994) Journal of Geophysical Research , vol.99 , pp. 12319-12341
    • Dickson, R.R.1    Brown, J.2
  • 12
    • 0027101044 scopus 로고
    • A chlorofluorocarbon section in the eastern North Atlantic
    • Doney, S.C., Bullister, J.L., 1992. A chlorofluorocarbon section in the eastern North Atlantic. Deep Sea Research 39, 1857-1883.
    • (1992) Deep Sea Research , vol.39 , pp. 1857-1883
    • Doney, S.C.1    Bullister, J.L.2
  • 14
    • 0028603773 scopus 로고
    • Circulation, transport and bottom boundary layers of the deep currents in the Brazil basin
    • Durrieu de Madron, X., Weatherly, G., 1994. Circulation, transport and bottom boundary layers of the deep currents in the Brazil basin. Journal of Marine Research 52, 583-638.
    • (1994) Journal of Marine Research , vol.52 , pp. 583-638
    • Durrieu De Madron, X.1    Weatherly, G.2
  • 15
    • 0000829901 scopus 로고
    • A continuous deep western boundary current between Abaco (26, 5°N) and Barbados (13°N)
    • Fine, R.A., Molinari, R.L., 1988. A continuous deep western boundary current between Abaco (26, 5°N) and Barbados (13°N). Deep Sea Research 35, 1441-1450.
    • (1988) Deep Sea Research , vol.35 , pp. 1441-1450
    • Fine, R.A.1    Molinari, R.L.2
  • 16
    • 0031392485 scopus 로고    scopus 로고
    • Seasonal transport variability of the Deep Western Boundary Current in the equatorial Atlantic
    • Fischer, J., Schott, F.A., 1997. Seasonal transport variability of the Deep Western Boundary Current in the equatorial Atlantic. J. Geophys. Res. 102, C13, 27751-27769.
    • (1997) J. Geophys. Res. , vol.102 , Issue.C13 , pp. 27751-27769
    • Fischer, J.1    Schott, F.A.2
  • 18
    • 0028562322 scopus 로고
    • Hemispheric asymmetry of deep water transport modes in the western Atlantic
    • Friedrichs, M.A.M., McCartney, M.S., Hall, M.M., 1994. Hemispheric asymmetry of deep water transport modes in the western Atlantic. Journal of Geophysical Research 99, 25165-25179.
    • (1994) Journal of Geophysical Research , vol.99 , pp. 25165-25179
    • Friedrichs, M.A.M.1    McCartney, M.S.2    Hall, M.M.3
  • 19
    • 24844466587 scopus 로고
    • Recueil de données. Mesures "en route", Courantomértrie ADCP et PEGASUS. Documents scientifiques No: O.P. 14, Centre ORSTOM de Cayenne, 161 pp.
    • Groupe CITHER 1, 1994a. Campagne CITHER-1. Recueil de données. Vol. 1/4: Mesures "en route", Courantomértrie ADCP et PEGASUS. Documents scientifiques No: O.P. 14, Centre ORSTOM de Cayenne, 161 pp.
    • (1994) Campagne CITHER-1 , vol.1-4
  • 20
    • 24844479542 scopus 로고
    • Campagne CITHER-1
    • CTD-O2. Rapport interne LPO 94-04, Laboratorie de Physique des Océans, Brest.
    • Groupe CITHER 1, 1994b. Campagne CITHER-1. Recueil de données. Vol. 2/4: CTD-O2. Rapport interne LPO 94-04, Laboratorie de Physique des Océans, Brest.
    • (1994) Recueil de Données , vol.2-4
  • 21
    • 24844479542 scopus 로고
    • Campagne CITHER-1
    • Traceurs géochimiques (1). Documents scientifiques N°0OP 15, Centre ORSTOM de Cayenne, 525 pp.
    • Groupe CITHER 1, 1994c. Campagne CITHER-1. Recueil de données. Vol. 3/4: Traceurs géochimiques (1). Documents scientifiques N°0OP 15, Centre ORSTOM de Cayenne, 525 pp.
    • (1994) Recueil de Données , vol.3-4
  • 23
    • 0030912296 scopus 로고    scopus 로고
    • Intertial nonlinear equilibration of equatorial flows
    • Hua, B.L., Moore, D.W., Le Gentil, S., 1997. Intertial nonlinear equilibration of equatorial flows. J. Fluids Mechanics 331, 345-371.
    • (1997) J. Fluids Mechanics , vol.331 , pp. 345-371
    • Hua, B.L.1    Moore, D.W.2    Le Gentil, S.3
  • 24
    • 0027387715 scopus 로고
    • Deep western boundary current variability off northeastern Brazil
    • Johns, W.E., Fratantoni, D.M., Zantopp, R.J., 1993. Deep western boundary current variability off northeastern Brazil. Deep Sea Research 40, 293-310.
    • (1993) Deep Sea Research , vol.40 , pp. 293-310
    • Johns, W.E.1    Fratantoni, D.M.2    Zantopp, R.J.3
  • 25
    • 0023125153 scopus 로고
    • Establishment of deep ocean circulation driven by deep-water production
    • Kawase, M. (1987) Establishment of deep ocean circulation driven by deep-water production, Journal of Physical Oceanography 17, 2294-2317.
    • (1987) Journal of Physical Oceanography , vol.17 , pp. 2294-2317
    • Kawase, M.1
  • 26
    • 0027840515 scopus 로고
    • Topographic effects on the bottom water circulation of the western tropical north Atlantic ocean
    • Kawase, M., 1993. Topographic effects on the bottom water circulation of the western tropical north Atlantic ocean. Deep Sea Research 40, 1259-1283.
    • (1993) Deep Sea Research , vol.40 , pp. 1259-1283
    • Kawase, M.1
  • 27
    • 0000663722 scopus 로고
    • Encounter of a deep western boundary current with the equator: A numerical spin-up experiment
    • Kawase, M., Rothstein, L.M., Spriinger, S.R., 1992. Encounter of a deep western boundary current with the equator: a numerical spin-up experiment. Journal of Geophysical Research 97, 5447-5463.
    • (1992) Journal of Geophysical Research , vol.97 , pp. 5447-5463
    • Kawase, M.1    Rothstein, L.M.2    Spriinger, S.R.3
  • 28
    • 0001007017 scopus 로고
    • Circulation and nutrients in middepth Atlantic waters
    • Kawase, M., Sarmiento, J.L., 1986. Circulation and nutrients in middepth Atlantic waters. Journal of Geophysical Research 91, 9749-9770.
    • (1986) Journal of Geophysical Research , vol.91 , pp. 9749-9770
    • Kawase, M.1    Sarmiento, J.L.2
  • 29
    • 0015614476 scopus 로고
    • The renewal of Labrador Sea water
    • Lazier, J.R.N., 1973. The renewal of Labrador Sea water. Deep Sea Research 20, 341-353.
    • (1973) Deep Sea Research , vol.20 , pp. 341-353
    • Lazier, J.R.N.1
  • 30
    • 0001364724 scopus 로고
    • Temperature and salinity changes in the deep Labrador Sea, 1962-1986
    • Lazier, J.R.N., 1988. Temperature and salinity changes in the deep Labrador Sea, 1962-1986. Deep Sea Research 35, 1247-1253.
    • (1988) Deep Sea Research , vol.35 , pp. 1247-1253
    • Lazier, J.R.N.1
  • 31
    • 0027836292 scopus 로고
    • Crossing of the equator by the Deep Western Boundary Current in the Western Atlantic Ocean
    • McCartney, M.S., 1993. Crossing of the equator by the Deep Western Boundary Current in the Western Atlantic Ocean. Journal of Physical Oceanography 23, 1953-1974.
    • (1993) Journal of Physical Oceanography , vol.23 , pp. 1953-1974
    • McCartney, M.S.1
  • 32
    • 0000718622 scopus 로고
    • Eastward flow through the Mid-Atlantic Ridge at 11°N and its influence on the abyss of the eastern basin
    • McCartney, M.S., Bennett, S.L., Woodgate-Jones, M.E., 1991. Eastward flow through the Mid-Atlantic Ridge at 11°N and its influence on the abyss of the eastern basin. Journal of Physical Oceanography 21, 1089-1121.
    • (1991) Journal of Physical Oceanography , vol.21 , pp. 1089-1121
    • McCartney, M.S.1    Bennett, S.L.2    Woodgate-Jones, M.E.3
  • 33
    • 0027804175 scopus 로고
    • Transequatorial flow of Antarctic bottom water in the western Atlantic ocean: Abyssal geostrophy at the equator
    • McCartney, M.S., Curry, R.A., 1993. Transequatorial flow of Antarctic bottom water in the western Atlantic ocean: abyssal geostrophy at the equator. Journal of Physical Oceanography 23, 1264-1276.
    • (1993) Journal of Physical Oceanography , vol.23 , pp. 1264-1276
    • McCartney, M.S.1    Curry, R.A.2
  • 34
    • 0028579070 scopus 로고
    • Flow pathways of bottom water through the Romanche and Chain Fracture Zones
    • Mercier, H., Speer, K.G., Honnorez, J., 1994. Flow pathways of bottom water through the Romanche and Chain Fracture Zones. Deep Sea Research 41, 1457-1477.
    • (1994) Deep Sea Research , vol.41 , pp. 1457-1477
    • Mercier, H.1    Speer, K.G.2    Honnorez, J.3
  • 36
    • 0030764728 scopus 로고    scopus 로고
    • Hydrography of the Romanche and Chain Fracture Zones
    • Mercier, H., Morin, P., 1997. Hydrography of the Romanche and Chain Fracture Zones. Journal of Geophysical Research 102, 10373-10389.
    • (1997) Journal of Geophysical Research , vol.102 , pp. 10373-10389
    • Mercier, H.1    Morin, P.2
  • 37
    • 0344380784 scopus 로고    scopus 로고
    • Tracing the North Atlantic Deep Water through the Romanche and Chain fracture zones using chlorofluoromethanes
    • in press
    • Messias, M.J., Andrié, C., Memery, L., Mercier, H., 1998. Tracing the North Atlantic Deep Water through the Romanche and Chain fracture zones using chlorofluoromethanes. Deep Sea Research, in press.
    • (1998) Deep Sea Research
    • Messias, M.J.1    Andrié, C.2    Memery, L.3    Mercier, H.4
  • 38
    • 0027009698 scopus 로고
    • The Deep Western Boundary Current in the tropical North Atlantic Ocean
    • Molinari, R.L., Fine, R.A., Johns, E., 1992. The Deep Western Boundary Current in the tropical North Atlantic Ocean. Deep Sea Research 39, 1967-1984.
    • (1992) Deep Sea Research , vol.39 , pp. 1967-1984
    • Molinari, R.L.1    Fine, R.A.2    Johns, E.3
  • 39
    • 0031874175 scopus 로고    scopus 로고
    • Northern and southern water masses in the equatorial Atlantic sector: Distribution of nutrients on the WOCF A6 and A7 lines
    • Oudot, C., Morin, P., Baurand, F., Wafar, M., Le Corre, P., 1998. Northern and southern water masses in the equatorial Atlantic sector: distribution of nutrients on the WOCF A6 and A7 lines. Deep Sea Research I 45, 873-902.
    • (1998) Deep Sea Research I , vol.45 , pp. 873-902
    • Oudot, C.1    Morin, P.2    Baurand, F.3    Wafar, M.4    Le Corre, P.5
  • 40
    • 0000493426 scopus 로고
    • Determining the strength of the deep western boundary current using the chlorofluoromethane ratio
    • Pickart, R.S., Hogg, N.G., Smethie, W.M. Jr., 1989. Determining the strength of the deep western boundary current using the chlorofluoromethane ratio. Journal of Physical Oceanography 19, 940-951.
    • (1989) Journal of Physical Oceanography , vol.19 , pp. 940-951
    • Pickart, R.S.1    Hogg, N.G.2    Smethie W.M., Jr.3
  • 41
    • 0027043943 scopus 로고
    • Water mass components of the North Atlantic deep western boundary current
    • Pickart, R.S., 1992. Water mass components of the North Atlantic deep western boundary current. Deep Sea Research 39, 1553-1572.
    • (1992) Deep Sea Research , vol.39 , pp. 1553-1572
    • Pickart, R.S.1
  • 42
    • 0001210280 scopus 로고
    • A tracer study of the deep Gulf Stream cyclonic recirculation
    • Pickart, R.S., Hogg, N.G., 1989. A tracer study of the deep Gulf Stream cyclonic recirculation. Deep Sea Research 36, 935-956.
    • (1989) Deep Sea Research , vol.36 , pp. 935-956
    • Pickart, R.S.1    Hogg, N.G.2
  • 43
    • 0001629040 scopus 로고
    • How does the deep western boundary current cross the Gulf Stream
    • Pickart, R.S., Smethie, W.M. Jr., 1993. How does the deep western boundary current cross the Gulf Stream; Journal of Physical Oceanography 23, 2602-2616.
    • (1993) Journal of Physical Oceanography , vol.23 , pp. 2602-2616
    • Pickart, R.S.1    Smethie W.M., Jr.2
  • 44
    • 0029775330 scopus 로고    scopus 로고
    • Intense mixing of Antarctic Bottom Water in the equatorial Atlantic ocean
    • Polzin, K.L., Speer, K.G., Toole, J.M., Schmitt, R.W., 1996. Intense mixing of Antarctic Bottom Water in the equatorial Atlantic ocean. Nature 380, 54-57.
    • (1996) Nature , vol.380 , pp. 54-57
    • Polzin, K.L.1    Speer, K.G.2    Toole, J.M.3    Schmitt, R.W.4
  • 46
    • 0028255034 scopus 로고
    • On the total geostrophic circulation of the North Atlantic ocean: Flow patterns, tracers, and transports
    • Reid, J.L., 1994. On the total geostrophic circulation of the North Atlantic ocean: flow patterns, tracers, and transports. Progress in Oceanography 33, 1-92.
    • (1994) Progress in Oceanography , vol.33 , pp. 1-92
    • Reid, J.L.1
  • 47
    • 0028197793 scopus 로고
    • The Deep Western Boundary Current: Tracers and velocities
    • Rhein, M., 1994. The Deep Western Boundary Current: tracers and velocities. Deep Sea Research 41, 263-281.
    • (1994) Deep Sea Research , vol.41 , pp. 263-281
    • Rhein, M.1
  • 48
    • 0028887262 scopus 로고
    • The Atlantic Deep Western Boundary Current: Water masses and transports near the equator
    • Rhein, M., Stramma, L., Send, U., 1995. The Atlantic Deep Western Boundary Current: water masses and transports near the equator. Journal of Geophysical Research 100, 2441-2457.
    • (1995) Journal of Geophysical Research , vol.100 , pp. 2441-2457
    • Rhein, M.1    Stramma, L.2    Send, U.3
  • 50
    • 0027835594 scopus 로고
    • Deep cross-equatorial flow in the Atlantic measured with SOFAR floats
    • Richardson, P.L., Schmitz, W.J. Jr., 1993. Deep cross-equatorial flow in the Atlantic measured with SOFAR floats. Journal of Geophysical Research 98, 8371-8387.
    • (1993) Journal of Geophysical Research , vol.98 , pp. 8371-8387
    • Richardson, P.L.1    Schmitz W.J., Jr.2
  • 51
    • 0027884255 scopus 로고
    • On mean and seasonal currents and transports at the western boundary of the equatorial Atlantic
    • Schott, F., Fisher, J., Reppin, J., Send, U., 1993. On mean and seasonal currents and transports at the western boundary of the equatorial Atlantic. Journal of Geophysical Research 98, 14353-14368.
    • (1993) Journal of Geophysical Research , vol.98 , pp. 14353-14368
    • Schott, F.1    Fisher, J.2    Reppin, J.3    Send, U.4
  • 52
    • 0027464423 scopus 로고
    • Tracing the thermohaline circulation in the western North Atlantic using chlorofluorocarbons
    • Smethie, Jr. W. 1993. Tracing the thermohaline circulation in the western North Atlantic using chlorofluorocarbons. Progress in Oceanography 31, 51-99.
    • (1993) Progress in Oceanography , vol.31 , pp. 51-99
    • Smethie W., Jr.1
  • 53
    • 0027455826 scopus 로고
    • The deep silica tongue in the north Atlantic
    • Speer, K.G., 1993. The deep silica tongue in the north Atlantic. Deep Sea Research 40, 925-936.
    • (1993) Deep Sea Research , vol.40 , pp. 925-936
    • Speer, K.G.1
  • 54
    • 0001444115 scopus 로고
    • Tracing lower north Atlantic deep water across the equator
    • Speer, K.G., McCartney, M.S., 1991. Tracing lower north Atlantic deep water across the equator. Journal of Geophysical Research 96, 20443-20448.
    • (1991) Journal of Geophysical Research , vol.96 , pp. 20443-20448
    • Speer, K.G.1    McCartney, M.S.2
  • 55
    • 0028216821 scopus 로고
    • Deep, zonal subequatorial currents
    • Talley, L.D., Johnson, G.C., 1994. Deep, zonal subequatorial currents. Science 263, 1125-1128.
    • (1994) Science , vol.263 , pp. 1125-1128
    • Talley, L.D.1    Johnson, G.C.2
  • 57
    • 0027044032 scopus 로고
    • An eastern Atlantic section from Iceland southward across the equator
    • Tsuchiya, M., Talley, L.D., McCartney, M.S., 1992. An eastern Atlantic section from Iceland southward across the equator. Deep Sea Research 39, 1885-1917.
    • (1992) Deep Sea Research , vol.39 , pp. 1885-1917
    • Tsuchiya, M.1    Talley, L.D.2    McCartney, M.S.3
  • 58
    • 0028197795 scopus 로고
    • Water-mass distributions in the western South Atlantic; a section from South Georgia Island (54S) northward across the equator
    • Tsuchiya, M., Talley, L.D., McCartney, M.S., 1994. Water-mass distributions in the western South Atlantic; a section from South Georgia Island (54S) northward across the equator. Journal of Marine Research 52, 55-81.
    • (1994) Journal of Marine Research , vol.52 , pp. 55-81
    • Tsuchiya, M.1    Talley, L.D.2    McCartney, M.S.3
  • 59
    • 34547231749 scopus 로고
    • Anthropogenic chlorofluoromethanes in newly formed Labrador sea water
    • Wallace, D.W.R., Lazier, J.R.N., 1988. Anthropogenic chlorofluoromethanes in newly formed Labrador sea water. Nature 332, 61-63.
    • (1988) Nature , vol.332 , pp. 61-63
    • Wallace, D.W.R.1    Lazier, J.R.N.2
  • 60
    • 0001301820 scopus 로고
    • Solubilities of chlorofluorocarbons 11 and 12 in water and seawater
    • Warner, M.J., Weiss, R.F., 1985. Solubilities of chlorofluorocarbons 11 and 12 in water and seawater. Deep Sea Research 32, 1485-1497.
    • (1985) Deep Sea Research , vol.32 , pp. 1485-1497
    • Warner, M.J.1    Weiss, R.F.2
  • 61
    • 0021890533 scopus 로고
    • Atmospheric chlorofluoromethanes in the deep equatorial Atlantic
    • Weiss, R.F., Bullister, J.L., Gammon, R.H., Warner, M.J., 1985. Atmospheric chlorofluoromethanes in the deep equatorial Atlantic. Nature 314, 608-610.
    • (1985) Nature , vol.314 , pp. 608-610
    • Weiss, R.F.1    Bullister, J.L.2    Gammon, R.H.3    Warner, M.J.4
  • 62
    • 0028581364 scopus 로고
    • Decadal variability of the North Atlantic in an ocean general circulation model
    • Weisse, R., Mikolajewicz, U., Maier-Reimer, E., 1994. Decadal variability of the North Atlantic in an ocean general circulation model. Journal of Geophysical Research 99, 12411-12421.
    • (1994) Journal of Geophysical Research , vol.99 , pp. 12411-12421
    • Weisse, R.1    Mikolajewicz, U.2    Maier-Reimer, E.3


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