This paper provides a review of existing methods for determining paleohydraulic parameters applicable to ancient lithified fluvial strata and attempts to update these formulae using empirical re-evaluation of modern stream data. Linear regression analysis was used to produce a series of equations that can readily be applied to ancient fluvial strata. These new formulae were developed using information from >4000 modern rivers, with depth, width, and grain size, as independent variables, as these can be directly estimated with varying degrees of confidence in the ancient stratigraphic record. Existing methods of estimating paleo-depth from crossbeds may reflect thalweg depth rather than average bankfull stream depth. Dune height (H_d), when corrected for compaction, is considered equal to 2.52 ± 0.7 times the average height of trough crossbeds (H_x). Thalweg depth (d_max) is calculated as 6.5058 x H_d^1.111_. From this average bankfull stream depth (d_bf) is calculated as 0.6095 x d_max^0.973. Bankfull channel width (w_bf) is then calculated as 16.293 d_max^1.198 for low sinuosity rivers (P < 1.3), 17.338 d_max^1.168 for intermediate sinuosity rivers (1.3<P>1.7), and 17.458 d_max^1.230 for high sinuosity rivers (P>1.7). Bankfull discharge (Q_bf) can be calculated as 17.359 d_max^1.270. Drainage basin size (DA) can be calculated from bankfull depth as 241 d_bf^2.17. Slope (S) can then be calculated from bankfull width as 0.0341 w_bf^-0.7430. Estimates of slope, discharge and drainage area can be further refined using formulae developed for specific Köppen-Geiger climate zones and sub-zones. With all of the above formulae a high degree of uncertainty remains due to the scatter of original data. In addition it is not always possible to establish climate variables in ancient strata. A further complication in comparing modern and ancient systems is discharge variability. This is related both to climate and to potential differences in surface runoff rates linked to the evolution and spread of rooted terrestrial vegetation.

本文回顾了用于确定适用于古代岩化河流地层的古水力学参数的现有方法，并尝试使用现代河流数据的经验重新评估来更新这些公式。线性回归分析被用来产生一系列可以很容易地应用于古代河流地层的方程。这些新公式是使用来自 4000 多条现代河流的信息开发的，深度、宽度和粒度作为自变量，因为这些可以在古代地层记录中以不同程度的置信度直接估计。从交叉层估计古深度的现有方法可能反映了 thalweg 深度，而不是平均河岸深度。沙丘高度（H _d)，当对压实进行校正时，被认为等于槽交叉床的平均高度 (H _x ) 的2.52 ± 0.7 倍。Thalweg 深度 (d _max ) 计算为 6.5058 x H _d ^1.111 _。从这个平均银行全流深度 (d _bf ) 计算为 0.6095 xd _max ^0.973。平滩沟道宽度（W _BF）然后作为16.293 d计算_最大值^1.198用于低弯度河流（P <1.3），17.338 d_最大^1.168中间弯度河流（1.3 <P> 1.7），和17.458 d_最大^1.230的高弯度河流(P>1.7)。Bankfull卸货（Q _bf) 可以计算为 17.359 d _max ^1.270。排水池尺寸 (DA) 可以从全岸深度计算为 241 d _bf ^2.17。坡度 (S) 然后可以从^银行全宽计算为 0.0341 w _bf ^-0.7430. 可以使用为特定 Köppen-Geiger 气候区和子区开发的公式进一步细化坡度、排放和排水面积的估计值。由于原始数据的分散，上述所有公式仍然存在高度的不确定性。此外，在古代地层中建立气候变量并不总是可能的。比较现代和古代系统的另一个复杂因素是流量可变性。这既与气候有关，也与地表径流速率的潜在差异有关，这些差异与有根的陆地植被的演化和传播有关。