Not logged in
PANGAEA.
Data Publisher for Earth & Environmental Science

Bauch, Dorothea; Cherniavskaia, Ekaterina; Novikhin, Andrey; Kassens, Heidemarie (2018): Physical oceanography, nutrients, and d18O measured on water bottle samples in the Laptev Sea. PANGAEA, https://doi.org/10.1594/PANGAEA.885448, Supplement to: Bauch, D; Cherniavskaia, Ekaterina (2018): Water Mass Classification on a Highly Variable Arctic Shelf Region: Origin of Laptev Sea Water Masses and Implications for the Nutrient Budget. Journal of Geophysical Research: Oceans, https://doi.org/10.1002/2017JC013524

Always quote above citation when using data! You can download the citation in several formats below.

RIS CitationBibTeX CitationShow MapGoogle Earth

Abstract:
Large gradients and inter annual variations on the Laptev Sea shelf prevent the use of uniform property ranges for a classification of major water masses. The central Laptev Sea is dominated by predominantly marine waters, locally formed polynya waters and riverine summer surface waters. Marine waters enter the central Laptev Sea from the northwestern Laptev Sea shelf and originate from the Kara Sea or the Arctic Ocean halocline. Local polynya waters are formed in the Laptev Sea coastal polynyas. Riverine summer surface waters are formed from Lena river discharge and local melt. We use a principal component analysis (PCA) in order to assess the distribution and importance of water masses within the Laptev Sea. This mathematical method is applied to hydro‐chemical summer data sets from the Laptev Sea from five years and allows to define water types based on objective and statistically significant criteria. We argue that the PCA‐derived water types are consistent with the Laptev Sea hydrography and indeed represent the major water masses on the central Laptev Sea shelf. Budgets estimated for the thus defined major Laptev Sea water masses indicate that freshwater inflow from the western Laptev Sea is about half or in the same order of magnitude as freshwater stored in locally formed polynya waters. Imported water dominates the nutrient budget in the central Laptev Sea; and only in years with enhanced local polynya activity is the nutrient budget of the locally formed water in the same order as imported nutrients.
Project(s):
Coverage:
Median Latitude: 75.912707 * Median Longitude: 124.937759 * South-bound Latitude: 71.502700 * West-bound Longitude: 97.065000 * North-bound Latitude: 79.750000 * East-bound Longitude: 143.022000
Date/Time Start: 1994-09-04T00:00:00 * Date/Time End: 2014-09-27T00:00:00
Minimum DEPTH, water: 0.00 m * Maximum DEPTH, water: 375.00 m
Event(s):
IP07-2_1 * Latitude: 72.499680 * Longitude: 131.023000 * Date/Time: 2007-08-29T15:10:00 * Elevation: -18.5 m * Campaign: Transdrift-XII (TD07) * Basis: Ivan Petrov * Device: CTD/Rosette (CTD-RO)
IP07-2_10-1 * Latitude: 78.498320 * Longitude: 143.019750 * Date/Time: 2007-09-08T22:55:00 * Elevation: -68.0 m * Campaign: Transdrift-XII (TD07) * Basis: Ivan Petrov * Device: CTD/Rosette (CTD-RO)
IP07-2_10P * Latitude: 74.997950 * Longitude: 124.009770 * Date/Time: 2007-09-03T04:13:00 * Elevation: -48.0 m * Campaign: Transdrift-XII (TD07) * Basis: Ivan Petrov * Device: CTD/Rosette (CTD-RO)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Event labelEventBauch, Dorothea
2Station labelStationBauch, Dorothea
3DATE/TIMEDate/TimeBauch, DorotheaGeocode
4LONGITUDELongitudeKassens, HeidemarieGeocode
5LATITUDELatitudeKassens, HeidemarieGeocode
6DEPTH, waterDepth watermKassens, HeidemarieGeocode
7Temperature, waterTemp°CKassens, Heidemarie
8SalinitySalBauch, DorotheaPSU bottle
9Phosphate[PO4]3-µmol/lNovikhin, Andrey
10SilicateSi(OH)4µmol/lNovikhin, Andrey
11Nitrate[NO3]-µmol/lNovikhin, Andrey
12Sea ice meltwaterSea ice w%Bauch, Dorothea
13River water percentageRiver water%Bauch, Dorothea
14δ18O, waterδ18O H2O‰ SMOWBauch, Dorothea
Size:
10429 data points

Download Data (login required)

Download dataset as tab-delimited text (use the following character encoding: )

View dataset as HTML (shows only first 2000 rows)