Southeastern Bering Sea

Banahan, S., and Goering, J.J. (1986) The production of biogenic silica and its accumulation on the southeastern Bering Sea shelf. Cont. Shelf Res. 5, 199-213. 

Barnard WR, Andreae MO, Iverson RL (1984) Dimethylsulfide and Phaeocystis poucheti in the Southeastern Bering Sea Cont Shelf Res 3 103-113... 

Napp, J., and Hunt, G. (2001). Anomalous conditions in the Southeastern Bering Sea Linkages among chmate, weather, ocean, and biology. Fish. Oceanogr. 10, 61-68. 

Aguilar-Islas, A. M., Hurst, M. P., Buck, K. N., Sohst, B., Smith, G. J., Lohan, M. C., and Bruland, K. W. (2006). Micro- and macro nutrients in the southeastern Bering Sea Insight into iron-replete and iron-depleted regimes. Prog. Oceanogr. 73, 99—126. 

Seasonal Cycles of Dissolved Methane in the Southeastern Bering Sea... 

Figure 1. Location of the southeastern Bering Sea, showing hydrographic regimes and bathymetry. Also shown in the position of a vertical section across the region (see Figure 4).

Methane September. 1975 and July. 1976. Concentrations of dissolved methane also were measured ih the southeastern Bering Sea in the fall of 1975 and again during the following summer. These observations are shown for both surface and near-bottom waters in Figures (7a,b, and 8a,b). 

In the southeastern Bering Sea, the seasonal variations in the concentration of methane are large, as shown in Table 1. 

Table I. Mean values for salinity, temperature, and methane in the three hydrographic regions of the southeastern Bering Sea. The number of values (n) used to compute the mean and standard deviation is also given. These observations were taken from the data report by Katz et al., (39).

The cause of the lower concentrations in 1975-76 is not precisely known, but one clue comes from the near-bottom concentrations of methane in St. George Basin. The maximum concentrations in October 1975 and July 1976 were only 600 nL/L and 400 nL/L, respectively (38), compared to concentrations in excess of 1800 nL/L in 1980-Kr (Figures 3-5). While the lower concentrations were most evident in St. George Basin, near-bottom concentrations were also lower throughout the shelf waters of the southeastern Bering Sea in 1975-76. 

Distributions of dissolved methane in the southeastern Bering Sea were made in 1975-76 and again 1980-81. These observations show large seasonal and inter-annual variations that appear to be related to the magnitude and timing of primary production. 

Katz, C. N. Cline, J. D. Kelly-Hansen, K. "Dissolved Methane Concentrations in the Southeastern Bering Sea, 1980-1981" NOAA Data Rept. ERL/PMEL-6 DOC/NOAA/ERL, Boulder, CO., 1982. 

Walsh, J.J. and McRoy, C.P. (1986) Ecosystem analysis in the southeastern Bering Sea. Continental Shelf Research, 5, 259-288. 

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