Hydrographic Data from the Gulf of Carpentaria ("Hydrographic Atlas") 1976-1977

Hydrographic data from six cruises, between April 1976 and March 1977 in the Gulf of Carpentaira are presented. Physical quantities (temperature, salinity and sigma-t) and chemical properties (dissolved oxygen, nitrate and silicate) were measured, and are presented in an associated report both as values at the stations and as contour maps.

These cruises began in 1975 with the initiation of the CSIRO Tropical Prawn Research Project, a new series of Gulf-wide cruises undertaken to study the larval ecology of penaeid prawns.

Approximately 70 stations were occupied on each cruise (with the exception of KL 7/76 which made only three transects in the southern Gulf). Two types of hydrographic stations were undertaken. Type 'A' stations consisted of Nansen casts with bottles every 10m from the surface to the bottom, sampling temperature, salinity, oxygen, nitrate plus nitrite, nitrogen and silicate. Type 'B' stations were Nansen casts with three bottles (at the surface, at 10m depth and within 10m of the bottom) sampling the same parameters as the Type 'A' stations. The sigma-t values were calculated from the temperature and salinity values, and the percentage of oxygen saturation was calculated from the oxygen concentration, temperature and salinity data. The difference between surface and bottom values was also calculated for all properties.

The six cruises included:

FRV Kalinda:
KL 4/76 April 1976
KL 7/76 June 1976
KL 9/76 September 1976

FV Judy B:
JB 2/76 November 1976

FV Raptis Pearl:
TP 1/77 January 1977

RV Sprightly:
TP 3/77 March 1977

本文呈现了1976年4月至1977年3月间于卡奔塔利亚湾（Gulf of Carpentaria）开展的6次科考航次所获取的水文数据。本次科考测定了物理参数（温度、盐度及sigma-t）与化学参数（溶解氧、硝酸盐及硅酸盐），相关报告中同步呈现了各测站的实测值与等值线分布图。

本次航次序列始于1975年启动的澳大利亚联邦科学与工业研究组织（CSIRO）热带对虾研究项目，该项目旨在开展全湾域科考航次，以研究对虾科幼体生态学。

除KL 7/76航次仅在卡奔塔利亚湾南部完成3条断面观测外，其余各航次均布设约70个测站。本次科考设置两类水文测站：A型测站采用南森采水器分层采样，从表层至底部分层间隔10米布设采水瓶，同步测定温度、盐度、溶解氧、硝酸盐+亚硝酸盐、氮及硅酸盐；B型测站同样采用南森采水器采样，仅布设3个采水瓶（分别位于表层、10米深度及距海底10米范围内），测定参数与A型测站一致。此外，研究人员基于温度与盐度数据计算得到sigma-t值，基于溶解氧浓度、温度及盐度数据计算得到氧饱和度百分比，并针对所有参数分别计算了表层与底层数值的差值。

本次6个航次具体如下：
FRV Kalinda号科考船：
KL 4/76，1976年4月
KL 7/76，1976年6月
KL 9/76，1976年9月

FV Judy B号科考船：
JB 2/76，1976年11月

FV Raptis Pearl号科考船：
TP 1/77，1977年1月

RV Sprightly号科考船：
TP 3/77，1977年3月