摘要:

Current meter and current drogue measurements made over tidal periods show that the circulation in Manukau Harbour is mainly tidal, with strongest flows within the inner harbour in the four main channels. In the entrance channel, peak tidal speeds reach 2.25 m.s−1at the surface, and 0.6 m.s−1near the bottom. Salinity and temperature observations show that the water is nearly homogeneous with depth in summer. A residence time of 22 d is calculated, assuming the small horizontal salinity contrast is maintained by freshwater inflow and evaporation.

ISSN:0028-8330    

DOI:10.1080/00288330.1977.9515697

出版商:Taylor & Francis Group    

年代:1977

数据来源: Taylor

摘要:

A lidded, 18‐litre sieve bucket was used to separate benthic macroinvertebrates from samples of mud taken with an Ekman grab. The device is operated in shallow water near the shore, and an entire Ekman grab sample (up to 10 litres) can be sieved in 5–10 min.

ISSN:0028-8330    

DOI:10.1080/00288330.1977.9515698

出版商:Taylor & Francis Group    

年代:1977

数据来源: Taylor

摘要:

Four adult specimens of the pycnogonidAmmothea magnicepswere observed swimming at the sea surface at night at Kaikoura. Even after capture the animals continued to swim at the surface of the water for over an hour. Such swimming behaviour is considered important in explaining the presence of “benthic” animals in plankton samples.

ISSN:0028-8330    

DOI:10.1080/00288330.1977.9515699

出版商:Taylor & Francis Group    

年代:1977

数据来源: Taylor

ISSN:0028-8330    

DOI:10.1080/00288330.1977.9515700

出版商:Taylor & Francis Group    

年代:1977

数据来源: Taylor

ISSN:0028-8330    

DOI:10.1080/00288330.1977.9515701

出版商:Taylor & Francis Group    

年代:1977

数据来源: Taylor