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A tidal bore is a hydraulic jump which occurs when the incoming tide forms a wave (or waves) of water that travel up a river or narrow bay against the direction of the current. [16] As is true for hydraulic jumps in general, bores take on various forms depending upon the difference in the waterlevel upstream and down, ranging from an undular ...
1. y 2 /y 1 > 1: depth increases over the jump so that y 2 > y 1 2. Fr 2 < 1: downstream flow must be subcritical 3. Fr 1 > 1: upstream flow must be supercritical. Table 2 shows the calculated values used to develop Figure 8. The values associated with a y 1 = 1.5 ft are not valid for use since they
Armour of basalt blocks. In hydrology and geography, armor is the association of surface pebbles, rocks or boulders with stream beds or beaches.Most commonly hydrological armor occurs naturally; however, a man-made form is usually called riprap, when shorelines or stream banks are fortified for erosion protection with large boulders or sizable manufactured concrete objects.
English: Charting a river - measuring its width at a given location using the intercept theorem. The intercept theorem can be used to determine a distance that cannot be measured directly, such as the width of a river or a lake, the height of tall buildings or similar. The graphic to the right illustrates measuring the width of a river.
Stream power is the rate of potential energy loss per unit of channel length. [7] This potential energy is lost moving particles along the stream bed. = where is the stream power, is the density of water, is the gravitational acceleration, is the channel slope, and is the discharge of the stream.
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A final 100-foot (30 m) section ends in the river, with or without a drop, depending on the river level. Overall slope adds another seven feet of drop, for a total course drop of 15 feet (4.6 m), plus zero to four feet (0 to 1.2 meters) into the river at the end. The following map shows the arrangement of the visible and submerged features.
Junior Leaders Course (discontinued): Two week basic mountaineering, plus greeley phase and river phase: geography, climate, and phenomenon of northern area of operations, living in the field, hazards to movement, medical problems, inland waterways, river training, boat operations, river charting, reading and navigation, and stream crossing.