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Changes in distribution of brine waters on the Laptev Sea shelf in 2007

Identifieur interne : 000890 ( PascalFrancis/Curation ); précédent : 000889; suivant : 000891

Changes in distribution of brine waters on the Laptev Sea shelf in 2007

Auteurs : D. Bauch [Allemagne] ; J. Hölemann [Allemagne] ; S. Willmes [Allemagne] ; M. Gröger [Allemagne] ; A. Novikhin [Russie] ; A. Nikulina [Allemagne] ; H. Kassens [Allemagne] ; L. Timokhov [Russie]

Source :

RBID : Pascal:11-0056197

Descripteurs français

English descriptors

Abstract

[1] Combined salinity and δ18O data from summer 2007 reveal a significant change in brine production in the Laptev Sea relative to summer 1994. The distribution of river water and brine-enriched waters on the Laptev Sea shelf is derived based on mass balance calculations using salinity and δ18O data. While in 1994 maximal influence of brines is seen within bottom waters, in 2007 the influence of brines is highest within the surface layer and only a moderate influence of brines is observed in the bottom layer. In contrast to 2007, salinity and δ18O data from summer 1994 clearly identify a locally formed brine-enriched bottom water mass as mixing end-member between surface layer and inner shelf waters on one side and with higher salinity water from the outer Laptev Sea on the other side. In 2007, the brine-enriched waters are predominantly part of the surface regime, and the mixing end-member between surface layer and outer shelf waters is replaced by a relatively salty bottom water mass. This relatively salty bottom water probably originates from the western Laptev Sea. The inverted distribution of brines in the water column in 2007 relative to 1994 suggests a less effective winter sea ice formation in winter 2006-2007 combined with advection of more saline waters from the western Laptev Sea or the outer shelf precedent to the climatically extreme summer 2007. The observed changes result in an altered export of waters from the Laptev Sea to the Arctic Ocean halocline.
pA  
A01 01  1    @0 0148-0227
A03   1    @0 J. geophys. res.
A05       @2 115
A06       @2 C11
A08 01  1  ENG  @1 Changes in distribution of brine waters on the Laptev Sea shelf in 2007
A11 01  1    @1 BAUCH (D.)
A11 02  1    @1 HÖLEMANN (J.)
A11 03  1    @1 WILLMES (S.)
A11 04  1    @1 GRÖGER (M.)
A11 05  1    @1 NOVIKHIN (A.)
A11 06  1    @1 NIKULINA (A.)
A11 07  1    @1 KASSENS (H.)
A11 08  1    @1 TIMOKHOV (L.)
A14 01      @1 Leibniz Institute of Marine Sciences (IFM-GEOMAR) @2 Kiel @3 DEU @Z 1 aut. @Z 6 aut. @Z 7 aut.
A14 02      @1 Alfred Wegener Institute for Polar and Marine Research (AWI) @2 Bremerhaven @3 DEU @Z 2 aut.
A14 03      @1 University of Trier @2 Trier @3 DEU @Z 3 aut.
A14 04      @1 MPI for Meteorology @2 Hamburg @3 DEU @Z 4 aut.
A14 05      @1 Arctic and Antarctic Research Institute (AARI) @2 Saint Petersburg @3 RUS @Z 5 aut. @Z 8 aut.
A20       @2 C11008.1-C11008.11
A21       @1 2010
A23 01      @0 ENG
A43 01      @1 INIST @2 3144 @5 354000191841680080
A44       @0 0000 @1 © 2011 INIST-CNRS. All rights reserved.
A45       @0 3/4 p.
A47 01  1    @0 11-0056197
A60       @1 P
A61       @0 A
A64 01  1    @0 Journal of geophysical research
A66 01      @0 USA
C01 01    ENG  @0 [1] Combined salinity and δ18O data from summer 2007 reveal a significant change in brine production in the Laptev Sea relative to summer 1994. The distribution of river water and brine-enriched waters on the Laptev Sea shelf is derived based on mass balance calculations using salinity and δ18O data. While in 1994 maximal influence of brines is seen within bottom waters, in 2007 the influence of brines is highest within the surface layer and only a moderate influence of brines is observed in the bottom layer. In contrast to 2007, salinity and δ18O data from summer 1994 clearly identify a locally formed brine-enriched bottom water mass as mixing end-member between surface layer and inner shelf waters on one side and with higher salinity water from the outer Laptev Sea on the other side. In 2007, the brine-enriched waters are predominantly part of the surface regime, and the mixing end-member between surface layer and outer shelf waters is replaced by a relatively salty bottom water mass. This relatively salty bottom water probably originates from the western Laptev Sea. The inverted distribution of brines in the water column in 2007 relative to 1994 suggests a less effective winter sea ice formation in winter 2006-2007 combined with advection of more saline waters from the western Laptev Sea or the outer shelf precedent to the climatically extreme summer 2007. The observed changes result in an altered export of waters from the Laptev Sea to the Arctic Ocean halocline.
C02 01  3    @0 001E
C02 02  2    @0 001E01
C02 03  2    @0 220
C03 01  2  FRE  @0 Eau saumâtre @5 01
C03 01  2  ENG  @0 brackish water @5 01
C03 01  2  SPA  @0 Agua salobre @5 01
C03 02  2  FRE  @0 Salinité @5 02
C03 02  2  ENG  @0 salinity @5 02
C03 02  2  SPA  @0 Salinidad @5 02
C03 03  X  FRE  @0 Eté @5 03
C03 03  X  ENG  @0 Summer @5 03
C03 03  X  SPA  @0 Verano @5 03
C03 04  2  FRE  @0 Saumure @5 04
C03 04  2  ENG  @0 brines @5 04
C03 04  2  SPA  @0 Salmuera @5 04
C03 05  X  FRE  @0 Eau rivière @5 05
C03 05  X  ENG  @0 River water @5 05
C03 05  X  SPA  @0 Agua río @5 05
C03 06  2  FRE  @0 Bilan masse @5 06
C03 06  2  ENG  @0 mass balance @5 06
C03 06  2  SPA  @0 Balance masa @5 06
C03 07  2  FRE  @0 Eau fond @5 07
C03 07  2  ENG  @0 bottom water @5 07
C03 07  2  SPA  @0 Agua fondo @5 07
C03 08  X  FRE  @0 Couche superficielle @5 08
C03 08  X  ENG  @0 Surface layer @5 08
C03 08  X  SPA  @0 Capa superficial @5 08
C03 09  X  FRE  @0 Masse eau @5 09
C03 09  X  ENG  @0 Water mass @5 09
C03 09  X  SPA  @0 Masa agua @5 09
C03 10  2  FRE  @0 Mixage @5 10
C03 10  2  ENG  @0 mixing @5 10
C03 10  2  SPA  @0 Mezcla @5 10
C03 11  X  FRE  @0 Mélangeage @5 11
C03 11  X  ENG  @0 Mixing @5 11
C03 11  X  SPA  @0 Mezclado @5 11
C03 12  2  FRE  @0 Plateforme continentale interne @5 12
C03 12  2  ENG  @0 inner shelf @5 12
C03 12  2  SPA  @0 Plataforma continental interna @5 12
C03 13  2  FRE  @0 Plateforme continentale externe @5 13
C03 13  2  ENG  @0 outer shelf @5 13
C03 13  2  SPA  @0 Plataforma continental externa @5 13
C03 14  X  FRE  @0 Hiver @5 14
C03 14  X  ENG  @0 Winter @5 14
C03 14  X  SPA  @0 Invierno @5 14
C03 15  2  FRE  @0 Glace marine @5 15
C03 15  2  ENG  @0 sea ice @5 15
C03 15  2  SPA  @0 Hielo marino @5 15
C03 16  2  FRE  @0 Advection @5 16
C03 16  2  ENG  @0 advection @5 16
C03 17  2  FRE  @0 Valeur extrême @5 17
C03 17  2  ENG  @0 extreme value @5 17
C03 18  2  FRE  @0 Exportation @5 18
C03 18  2  ENG  @0 export @5 18
C03 18  2  SPA  @0 Exportación @5 18
C03 19  2  FRE  @0 Océan Arctique @2 564 @5 19
C03 19  2  ENG  @0 Arctic Ocean @2 564 @5 19
C03 19  2  SPA  @0 Océano Ártico @2 564 @5 19
C03 20  X  FRE  @0 Halocline @5 20
C03 20  X  ENG  @0 Halocline @5 20
C03 20  X  SPA  @0 Haloclina @5 20
C03 21  X  FRE  @0 Zone polaire @5 21
C03 21  X  ENG  @0 Polar region @5 21
C03 21  X  SPA  @0 Zona polar @5 21
C03 22  2  FRE  @0 Mer de Laptev @2 NG @5 61
C03 22  2  ENG  @0 Laptev Sea @2 NG @5 61
C03 22  2  SPA  @0 Mar de Laptev @2 NG @5 61
N21       @1 038
N44 01      @1 OTO
N82       @1 OTO

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Pascal:11-0056197

Le document en format XML

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<keywords scheme="KwdEn" xml:lang="en">
<term>Arctic Ocean</term>
<term>Halocline</term>
<term>Laptev Sea</term>
<term>Mixing</term>
<term>Polar region</term>
<term>River water</term>
<term>Summer</term>
<term>Surface layer</term>
<term>Water mass</term>
<term>Winter</term>
<term>advection</term>
<term>bottom water</term>
<term>brackish water</term>
<term>brines</term>
<term>export</term>
<term>extreme value</term>
<term>inner shelf</term>
<term>mass balance</term>
<term>mixing</term>
<term>outer shelf</term>
<term>salinity</term>
<term>sea ice</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr">
<term>Eau saumâtre</term>
<term>Salinité</term>
<term>Eté</term>
<term>Saumure</term>
<term>Eau rivière</term>
<term>Bilan masse</term>
<term>Eau fond</term>
<term>Couche superficielle</term>
<term>Masse eau</term>
<term>Mixage</term>
<term>Mélangeage</term>
<term>Plateforme continentale interne</term>
<term>Plateforme continentale externe</term>
<term>Hiver</term>
<term>Glace marine</term>
<term>Advection</term>
<term>Valeur extrême</term>
<term>Exportation</term>
<term>Océan Arctique</term>
<term>Halocline</term>
<term>Zone polaire</term>
<term>Mer de Laptev</term>
</keywords>
<keywords scheme="Wicri" type="topic" xml:lang="fr">
<term>Exportation</term>
<term>Océan Arctique</term>
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<div type="abstract" xml:lang="en">[1] Combined salinity and δ
<sup>18</sup>
O data from summer 2007 reveal a significant change in brine production in the Laptev Sea relative to summer 1994. The distribution of river water and brine-enriched waters on the Laptev Sea shelf is derived based on mass balance calculations using salinity and δ
<sup>18</sup>
O data. While in 1994 maximal influence of brines is seen within bottom waters, in 2007 the influence of brines is highest within the surface layer and only a moderate influence of brines is observed in the bottom layer. In contrast to 2007, salinity and δ
<sup>18</sup>
O data from summer 1994 clearly identify a locally formed brine-enriched bottom water mass as mixing end-member between surface layer and inner shelf waters on one side and with higher salinity water from the outer Laptev Sea on the other side. In 2007, the brine-enriched waters are predominantly part of the surface regime, and the mixing end-member between surface layer and outer shelf waters is replaced by a relatively salty bottom water mass. This relatively salty bottom water probably originates from the western Laptev Sea. The inverted distribution of brines in the water column in 2007 relative to 1994 suggests a less effective winter sea ice formation in winter 2006-2007 combined with advection of more saline waters from the western Laptev Sea or the outer shelf precedent to the climatically extreme summer 2007. The observed changes result in an altered export of waters from the Laptev Sea to the Arctic Ocean halocline.</div>
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<s2>Hamburg</s2>
<s3>DEU</s3>
<sZ>4 aut.</sZ>
</fA14>
<fA14 i1="05">
<s1>Arctic and Antarctic Research Institute (AARI)</s1>
<s2>Saint Petersburg</s2>
<s3>RUS</s3>
<sZ>5 aut.</sZ>
<sZ>8 aut.</sZ>
</fA14>
<fA20>
<s2>C11008.1-C11008.11</s2>
</fA20>
<fA21>
<s1>2010</s1>
</fA21>
<fA23 i1="01">
<s0>ENG</s0>
</fA23>
<fA43 i1="01">
<s1>INIST</s1>
<s2>3144</s2>
<s5>354000191841680080</s5>
</fA43>
<fA44>
<s0>0000</s0>
<s1>© 2011 INIST-CNRS. All rights reserved.</s1>
</fA44>
<fA45>
<s0>3/4 p.</s0>
</fA45>
<fA47 i1="01" i2="1">
<s0>11-0056197</s0>
</fA47>
<fA60>
<s1>P</s1>
</fA60>
<fA61>
<s0>A</s0>
</fA61>
<fA64 i1="01" i2="1">
<s0>Journal of geophysical research</s0>
</fA64>
<fA66 i1="01">
<s0>USA</s0>
</fA66>
<fC01 i1="01" l="ENG">
<s0>[1] Combined salinity and δ
<sup>18</sup>
O data from summer 2007 reveal a significant change in brine production in the Laptev Sea relative to summer 1994. The distribution of river water and brine-enriched waters on the Laptev Sea shelf is derived based on mass balance calculations using salinity and δ
<sup>18</sup>
O data. While in 1994 maximal influence of brines is seen within bottom waters, in 2007 the influence of brines is highest within the surface layer and only a moderate influence of brines is observed in the bottom layer. In contrast to 2007, salinity and δ
<sup>18</sup>
O data from summer 1994 clearly identify a locally formed brine-enriched bottom water mass as mixing end-member between surface layer and inner shelf waters on one side and with higher salinity water from the outer Laptev Sea on the other side. In 2007, the brine-enriched waters are predominantly part of the surface regime, and the mixing end-member between surface layer and outer shelf waters is replaced by a relatively salty bottom water mass. This relatively salty bottom water probably originates from the western Laptev Sea. The inverted distribution of brines in the water column in 2007 relative to 1994 suggests a less effective winter sea ice formation in winter 2006-2007 combined with advection of more saline waters from the western Laptev Sea or the outer shelf precedent to the climatically extreme summer 2007. The observed changes result in an altered export of waters from the Laptev Sea to the Arctic Ocean halocline.</s0>
</fC01>
<fC02 i1="01" i2="3">
<s0>001E</s0>
</fC02>
<fC02 i1="02" i2="2">
<s0>001E01</s0>
</fC02>
<fC02 i1="03" i2="2">
<s0>220</s0>
</fC02>
<fC03 i1="01" i2="2" l="FRE">
<s0>Eau saumâtre</s0>
<s5>01</s5>
</fC03>
<fC03 i1="01" i2="2" l="ENG">
<s0>brackish water</s0>
<s5>01</s5>
</fC03>
<fC03 i1="01" i2="2" l="SPA">
<s0>Agua salobre</s0>
<s5>01</s5>
</fC03>
<fC03 i1="02" i2="2" l="FRE">
<s0>Salinité</s0>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="2" l="ENG">
<s0>salinity</s0>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="2" l="SPA">
<s0>Salinidad</s0>
<s5>02</s5>
</fC03>
<fC03 i1="03" i2="X" l="FRE">
<s0>Eté</s0>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="X" l="ENG">
<s0>Summer</s0>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="X" l="SPA">
<s0>Verano</s0>
<s5>03</s5>
</fC03>
<fC03 i1="04" i2="2" l="FRE">
<s0>Saumure</s0>
<s5>04</s5>
</fC03>
<fC03 i1="04" i2="2" l="ENG">
<s0>brines</s0>
<s5>04</s5>
</fC03>
<fC03 i1="04" i2="2" l="SPA">
<s0>Salmuera</s0>
<s5>04</s5>
</fC03>
<fC03 i1="05" i2="X" l="FRE">
<s0>Eau rivière</s0>
<s5>05</s5>
</fC03>
<fC03 i1="05" i2="X" l="ENG">
<s0>River water</s0>
<s5>05</s5>
</fC03>
<fC03 i1="05" i2="X" l="SPA">
<s0>Agua río</s0>
<s5>05</s5>
</fC03>
<fC03 i1="06" i2="2" l="FRE">
<s0>Bilan masse</s0>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="2" l="ENG">
<s0>mass balance</s0>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="2" l="SPA">
<s0>Balance masa</s0>
<s5>06</s5>
</fC03>
<fC03 i1="07" i2="2" l="FRE">
<s0>Eau fond</s0>
<s5>07</s5>
</fC03>
<fC03 i1="07" i2="2" l="ENG">
<s0>bottom water</s0>
<s5>07</s5>
</fC03>
<fC03 i1="07" i2="2" l="SPA">
<s0>Agua fondo</s0>
<s5>07</s5>
</fC03>
<fC03 i1="08" i2="X" l="FRE">
<s0>Couche superficielle</s0>
<s5>08</s5>
</fC03>
<fC03 i1="08" i2="X" l="ENG">
<s0>Surface layer</s0>
<s5>08</s5>
</fC03>
<fC03 i1="08" i2="X" l="SPA">
<s0>Capa superficial</s0>
<s5>08</s5>
</fC03>
<fC03 i1="09" i2="X" l="FRE">
<s0>Masse eau</s0>
<s5>09</s5>
</fC03>
<fC03 i1="09" i2="X" l="ENG">
<s0>Water mass</s0>
<s5>09</s5>
</fC03>
<fC03 i1="09" i2="X" l="SPA">
<s0>Masa agua</s0>
<s5>09</s5>
</fC03>
<fC03 i1="10" i2="2" l="FRE">
<s0>Mixage</s0>
<s5>10</s5>
</fC03>
<fC03 i1="10" i2="2" l="ENG">
<s0>mixing</s0>
<s5>10</s5>
</fC03>
<fC03 i1="10" i2="2" l="SPA">
<s0>Mezcla</s0>
<s5>10</s5>
</fC03>
<fC03 i1="11" i2="X" l="FRE">
<s0>Mélangeage</s0>
<s5>11</s5>
</fC03>
<fC03 i1="11" i2="X" l="ENG">
<s0>Mixing</s0>
<s5>11</s5>
</fC03>
<fC03 i1="11" i2="X" l="SPA">
<s0>Mezclado</s0>
<s5>11</s5>
</fC03>
<fC03 i1="12" i2="2" l="FRE">
<s0>Plateforme continentale interne</s0>
<s5>12</s5>
</fC03>
<fC03 i1="12" i2="2" l="ENG">
<s0>inner shelf</s0>
<s5>12</s5>
</fC03>
<fC03 i1="12" i2="2" l="SPA">
<s0>Plataforma continental interna</s0>
<s5>12</s5>
</fC03>
<fC03 i1="13" i2="2" l="FRE">
<s0>Plateforme continentale externe</s0>
<s5>13</s5>
</fC03>
<fC03 i1="13" i2="2" l="ENG">
<s0>outer shelf</s0>
<s5>13</s5>
</fC03>
<fC03 i1="13" i2="2" l="SPA">
<s0>Plataforma continental externa</s0>
<s5>13</s5>
</fC03>
<fC03 i1="14" i2="X" l="FRE">
<s0>Hiver</s0>
<s5>14</s5>
</fC03>
<fC03 i1="14" i2="X" l="ENG">
<s0>Winter</s0>
<s5>14</s5>
</fC03>
<fC03 i1="14" i2="X" l="SPA">
<s0>Invierno</s0>
<s5>14</s5>
</fC03>
<fC03 i1="15" i2="2" l="FRE">
<s0>Glace marine</s0>
<s5>15</s5>
</fC03>
<fC03 i1="15" i2="2" l="ENG">
<s0>sea ice</s0>
<s5>15</s5>
</fC03>
<fC03 i1="15" i2="2" l="SPA">
<s0>Hielo marino</s0>
<s5>15</s5>
</fC03>
<fC03 i1="16" i2="2" l="FRE">
<s0>Advection</s0>
<s5>16</s5>
</fC03>
<fC03 i1="16" i2="2" l="ENG">
<s0>advection</s0>
<s5>16</s5>
</fC03>
<fC03 i1="17" i2="2" l="FRE">
<s0>Valeur extrême</s0>
<s5>17</s5>
</fC03>
<fC03 i1="17" i2="2" l="ENG">
<s0>extreme value</s0>
<s5>17</s5>
</fC03>
<fC03 i1="18" i2="2" l="FRE">
<s0>Exportation</s0>
<s5>18</s5>
</fC03>
<fC03 i1="18" i2="2" l="ENG">
<s0>export</s0>
<s5>18</s5>
</fC03>
<fC03 i1="18" i2="2" l="SPA">
<s0>Exportación</s0>
<s5>18</s5>
</fC03>
<fC03 i1="19" i2="2" l="FRE">
<s0>Océan Arctique</s0>
<s2>564</s2>
<s5>19</s5>
</fC03>
<fC03 i1="19" i2="2" l="ENG">
<s0>Arctic Ocean</s0>
<s2>564</s2>
<s5>19</s5>
</fC03>
<fC03 i1="19" i2="2" l="SPA">
<s0>Océano Ártico</s0>
<s2>564</s2>
<s5>19</s5>
</fC03>
<fC03 i1="20" i2="X" l="FRE">
<s0>Halocline</s0>
<s5>20</s5>
</fC03>
<fC03 i1="20" i2="X" l="ENG">
<s0>Halocline</s0>
<s5>20</s5>
</fC03>
<fC03 i1="20" i2="X" l="SPA">
<s0>Haloclina</s0>
<s5>20</s5>
</fC03>
<fC03 i1="21" i2="X" l="FRE">
<s0>Zone polaire</s0>
<s5>21</s5>
</fC03>
<fC03 i1="21" i2="X" l="ENG">
<s0>Polar region</s0>
<s5>21</s5>
</fC03>
<fC03 i1="21" i2="X" l="SPA">
<s0>Zona polar</s0>
<s5>21</s5>
</fC03>
<fC03 i1="22" i2="2" l="FRE">
<s0>Mer de Laptev</s0>
<s2>NG</s2>
<s5>61</s5>
</fC03>
<fC03 i1="22" i2="2" l="ENG">
<s0>Laptev Sea</s0>
<s2>NG</s2>
<s5>61</s5>
</fC03>
<fC03 i1="22" i2="2" l="SPA">
<s0>Mar de Laptev</s0>
<s2>NG</s2>
<s5>61</s5>
</fC03>
<fN21>
<s1>038</s1>
</fN21>
<fN44 i1="01">
<s1>OTO</s1>
</fN44>
<fN82>
<s1>OTO</s1>
</fN82>
</pA>
</standard>
</inist>
</record>

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   |texte=   Changes in distribution of brine waters on the Laptev Sea shelf in 2007
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