相关实验视频

Updated: Jul 12, 2026

Measuring Phosphorus Release in Laboratory Microcosms for Water Quality Assessment
06:42

Measuring Phosphorus Release in Laboratory Microcosms for Water Quality Assessment

Published on: July 22, 2019

斯波坎洪水争议和火星外流道的争议

V R Baker

    Science (New York, N.Y.)
    |December 22, 1978
    PubMed
    概括

    哈伦·布雷茨 (J Harlen Bretz) 提出,道化地是由斯波坎的一次灾难性洪水形成的. 他的有争议的假设,最初被拒绝,现在科学验证,与火星洪水道的相关性.

    更多相关视频

    Visualizing Hyporheic Flow Through Bedforms Using Dye Experiments and Simulation09:49

    Visualizing Hyporheic Flow Through Bedforms Using Dye Experiments and Simulation

    Published on: November 18, 2015

    相关概念视频

    Responses to Drought and Flooding02:41

    Responses to Drought and Flooding

    Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.
    Design Example: Analyzing Capacity Contours for Flood Risk Assessment01:17

    Design Example: Analyzing Capacity Contours for Flood Risk Assessment

    Flood risk assessment involves careful planning and analysis to ensure the safety of communities near water retention structures. Capacity contours are a vital tool in this process, as they illustrate the potential spread of water at specific levels in a given area. In the context of building a bund across a small valley, these contours play a critical role in evaluating the safety of nearby residential areas.In this example, the bund is intended to store stormwater in the valley. The engineers...
    Rapidly Varying Flow01:24

    Rapidly Varying Flow

    Rapidly varying flow (RVF) in open channels is characterized by abrupt changes in flow depth over a short distance, with the rate of depth change relative to distance often approaching unity. These flows are inherently complex due to their transient and multi-dimensional nature, making exact analysis difficult. However, approximate solutions using simplified models provide valuable insights into their behavior.Key Features of Rapidly Varying FlowRVF is commonly observed in scenarios involving...
    Underflow Gates01:30

    Underflow Gates

    Underflow gates are vital for controlling water flow in irrigation canals. The three main types of underflow gates — vertical, radial, and drum gates — serve different purposes while ensuring effective flow management. Vertical gates move up and down, generating a free-flowing water jet; radial gates pivot to regulate the flow; and drum gates rotate for precise adjustments. The flow through these gates is influenced by downstream conditions, resulting in free or drowned outflow.Free and Drowned...
    Conservation of Mass in Moving, Nondeforming Control Volume01:14

    Conservation of Mass in Moving, Nondeforming Control Volume

    Stormwater detention basins are essential in managing runoff during heavy rainfall, particularly in urban areas where impervious surfaces increase the risk of flooding. Understanding the conservation of mass in these systems allows engineers to optimize basin performance, balancing inflow, outflow, and water storage.
    In the context of a detention basin, the conservation of mass states that the total mass of water entering the basin must equal the mass leaving the basin plus any accumulation of...
    Design Example: Creating a Hydraulic Model of a Dam Spillway01:21

    Design Example: Creating a Hydraulic Model of a Dam Spillway

    Scaled hydraulic models of dam spillways provide a practical way to replicate and study the intricate flow dynamics of these structures. Often built to a 1:15 ratio, these models allow for observing critical water behavior, such as velocity distribution, flow patterns, and energy dissipation.