| The hydrographical work in the Weddell Sea has done much to clear up the mystery of this, the least known of all the seas. |
| Hydrographical measurements include the tidal, current and wave information of physical oceanography. |
| I should like to be able to write that this important hydrographical circumstance was part of the plan, but it was only discovered long afterwards. |
| Geomorphologic and hydrographical properties of the drainage canals predict the shape and quantitative characteristics of beaver impoundments in these water bodies. |
| The regeneration project manager said a hydrographical survey of the area using geophysical scanning would take place next month. |
| The hydrographer to the admiralty presides over the hydrographical office. |
