﻿Related 
  Sedimentary 
  Surface 
  Forms. 
  157 
  

  

  Table 
  II. 
  — 
  Experimental 
  Data 
  on 
  Subaqueous 
  Current-Eipples. 
  

  

  © 
  

   o 
  

   (3 
  

   © 
  

  

  © 
  

   CD 
  

  

  © 
  H 
  

   > 
  © 
  

  

  Z(cm.) 
  

  

  2 
  Amplitude. 
  

  

  i 
  

  

  a 
  

  

  03 
  © 
  ^ 
  o 
  

   § 
  03 
  Jh 
  

  

  P 
  P-l 
  

  

  D(mm.) 
  

  

  ft 
  £ 
  

  

  g 
  Velocity 
  

   > 
  of 
  ' 
  

   § 
  Current. 
  

  

  bb 
  

  

  ^ 
  .5 
  

  

  p4° 
  > 
  

  

  £(mm./sec.) 
  

  

  Blasius 
  

  

  

  

  4-5 
  

  

  later 
  

  

  10 
  

  

  0-4 
  

  

  0-2 
  

  

  0-03 
  

  

  0-303(m) 
  a 
  

  

  

  (1910, 
  

  

  p. 
  468) 
  

  

  

  

  about 
  0*5 
  

  

  

  

  

  

  

  

  

  

  

  Hahmann 
  

  

  12-5 
  

  

  12-91 
  

  

  13.07 
  

  

  13-18 
  

  

  1330 
  

  

  13-42 
  

  

  13-57 
  

  

  13-72 
  

  

  13-89 
  

  

  13-94 
  

  

  13-92 
  

  

  13-74 
  

  

  135 
  

  

  132 
  

  

  12-87 
  

   12-4 
  

  

  13-53 
  

   13-55 
  

   13-55 
  

  

  

  

  constant 
  

  

  constant 
  

  

  constant 
  

   a 
  

  

  0-035 
  

   0-055 
  

   0-075 
  

  

  0-313(s) 
  

  

  0-338 
  

  

  0-35 
  

  

  0-375 
  

  

  0-394 
  

  

  0-431 
  

  

  0-45 
  

  

  0-475 
  

  

  0-50 
  

  

  0-525 
  

  

  0-375(s) 
  

  

  a 
  

  

  constant 
  

  

  

  (1912) 
  

   Table 
  1. 
  

  

  

  

  

  ( 
  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  2 
  

  

  

  

  

  

  

  

  

  

  

  Table 
  3. 
  

  

  

  

  ----- 
  

  

  2-8-2-3 
  

   2-3-1-8 
  

   1-8-1-5 
  

   1-5-1-0 
  

   1-0-0-0 
  

   " 
  feiner 
  

   Quartz- 
  

   sand 
  " 
  

  

  constant 
  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  _ 
  

  

  

  

  Table 
  8. 
  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  Gilbert 
  b 
  

  

  17-8 
  

  

  -22-8 
  

   33-0 
  

  

  -38-1 
  

  

  "dunes" 
  

   reported 
  

  

  1-3 
  

  

  "To" 
  

  

  14 
  

  

  -18 
  

   17 
  

  

  -20 
  

  

  

  

  ?±0-45*(m) 
  

  

  2-8 
  

  

  (1914, 
  

   p. 
  32) 
  

  

  

  

  

  

  

  ?±0'60*(m) 
  

  

  7-6 
  

  

  

  

  

  Table 
  4. 
  

  

  0-3 
  (A) 
  

   0-4 
  (B) 
  

   0-5 
  (C) 
  

   0-7 
  (D) 
  

   1-7 
  (E) 
  

   3-2 
  (F) 
  

  

  0-02-0-06 
  

   0-02-0-14 
  

   0-02-0-18 
  

   0-02-0-15 
  

   0-04-0-19 
  

   0-06-0-11 
  

  

  0-31-0-51(7>i) 
  

  

  0-33-0-83 
  

  

  0-34-0-83 
  

  

  0-27-0-89 
  

  

  0-36-0-92 
  

  

  0-81-1-06 
  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  a 
  In 
  column 
  7, 
  m 
  = 
  mean 
  velocity, 
  and 
  s 
  = 
  surface 
  velocity 
  as 
  in 
  Table 
  I. 
  

  

  b 
  Gilbert's 
  figures 
  have 
  been 
  transformed 
  from 
  feet 
  to 
  nearest 
  cm. 
  or 
  mm. 
  

   The 
  velocities 
  marked 
  with 
  asterisks 
  are 
  not 
  given 
  in 
  Gilbert's 
  paper, 
  but 
  are 
  

   supposed 
  by 
  the 
  author 
  to 
  represent 
  probable 
  values, 
  judging 
  from 
  the 
  data 
  

   given 
  in 
  the 
  tables. 
  They 
  are 
  mentioned 
  only, 
  in 
  order 
  to 
  make 
  possible 
  a 
  

   comparison 
  between 
  the 
  rate 
  of 
  increase 
  in 
  wave-length 
  and 
  current- 
  velocity 
  in 
  

   this 
  and 
  in 
  the 
  other 
  experiments. 
  

  

  