132:, which increases with the water's depth. It is proportional to the square root of the depth, for the extremely long gravity waves that transport the water that is following the Moon around the Earth. The oceans are about 4 km (2.5 mi) deep and would have to be at least 22 km (14 mi) deep for these waves to keep up with the Moon. As mentioned above, a similar time lag accompanies the solar tides, a complicating factor that varies with the lunar phases. By observing the age of leap tides, it becomes clear that the delay can actually exceed 24 hours in some locations.
630:
1518:
1539:
619:
1528:
25:
128:
Hundreds of factors are involved in the lunitidal interval, especially near the shoreline. However, for those far away enough from the coast, the dominating consideration is the speed of
1258:
1248:
307:
147:. Tide tables forecast the time of the next high water. The difference between these two times is the lunitidal interval. This value can be used to calibrate
42:
34:
1164:
151:
and wristwatches to allow for simple but crude tidal predictions. Unfortunately, the lunitidal intervals vary day-by-day even at a given location.
579:
347:
811:
179:
701:
300:
1406:
833:
721:
1253:
524:
135:
The approximate lunitidal interval can be calculated if the moonrise, moonset, and high tide times are known for a location. In the
671:
711:
1531:
1441:
427:
1114:
217:
1564:
1521:
293:
117:. Therefore, the lunitidal interval varies from place to place – from three hours over deep oceans to eight hours at
569:
629:
263:
766:
666:
1301:
706:
1431:
806:
796:
736:
372:
342:
1468:
1451:
1288:
781:
646:
584:
574:
467:
1463:
1401:
828:
514:
1296:
1278:
786:
681:
316:
1483:
1316:
1019:
876:
741:
452:
110:
1478:
1363:
1358:
1084:
756:
716:
432:
136:
113:, but a delay usually precedes high tide, depending largely on the shape of the coastline and the
1421:
1134:
1124:
1089:
989:
974:
1503:
1493:
1436:
1416:
1099:
1064:
999:
979:
969:
851:
539:
397:
102:
183:
1458:
1426:
1396:
1205:
1190:
1059:
994:
886:
801:
731:
656:
437:
407:
337:
332:
1263:
1159:
1109:
1074:
1034:
926:
896:
746:
696:
606:
564:
497:
422:
382:
278:
267:
221:
118:
618:
1569:
1373:
1368:
1273:
1268:
1104:
1044:
1039:
771:
661:
482:
417:
392:
203:
121:. The lunitidal interval further varies within about 3h ± 30 minutes according to the
1558:
1543:
1391:
1311:
1200:
1119:
1094:
1029:
959:
866:
761:
638:
559:
519:
492:
402:
352:
160:
129:
143:
when it is southernmost in the sky. Lunar data are available from printed or online
1538:
1498:
1446:
1386:
1337:
1215:
1210:
1185:
1169:
1144:
861:
751:
691:
477:
387:
362:
214:
238:, p. 89, by James Greig Mccully, World Scientific Publishing Company, Jan 13, 2006
251:, second edition, Charles E. Merrill Publishing Co., p.114, 1971, Columbus, Ohio.
1488:
1220:
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1014:
954:
921:
911:
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791:
726:
686:
676:
651:
534:
507:
487:
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412:
236:
Beyond the Moon: A Conversational, Common Sense Guide to
Understanding the Tides
140:
122:
71:
1306:
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1129:
1024:
1004:
931:
916:
901:
891:
856:
776:
596:
591:
554:
549:
544:
442:
148:
95:
105:. Theoretically, peak tidal forces at a given location would concur when the
1378:
1240:
1225:
1139:
984:
823:
818:
601:
529:
457:
377:
367:
324:
114:
1473:
1195:
1054:
946:
936:
881:
357:
260:
125:. (This is caused by the time interval associated with the solar tides.)
285:
86:). Sometimes a term is not used for the time lag, but instead the terms
1342:
1332:
502:
472:
144:
1049:
462:
1411:
1230:
1009:
964:
843:
106:
75:
289:
18:
16:
Time lag from the Moon's culmination to the next high tide
46:
1351:
1325:
1287:
1239:
1178:
1073:
945:
842:
637:
323:
1259:North West Shelf Operational Oceanographic System
1249:Deep-ocean Assessment and Reporting of Tsunamis
94:of the tide are used for the entry that is in
301:
8:
215:Proudman Oceanographic laboratory definition
180:"Australian Hydrographic Service definition"
101:Tides are known to be mainly caused by the
78:at a given location. It is also called the
308:
294:
286:
171:
580:one-dimensional Saint-Venant equations
7:
1527:
231:
229:
47:move details into the article's body
1407:National Oceanographic Data Center
834:World Ocean Circulation Experiment
722:Global Ocean Data Analysis Project
14:
1254:Global Sea Level Observing System
70:measures the time lag from lunar
1537:
1526:
1517:
1516:
712:Geochemical Ocean Sections Study
628:
617:
23:
1442:Ocean thermal energy conversion
1165:Vine–Matthews–Morley hypothesis
1:
702:El Niño–Southern Oscillation
672:Craik–Leibovich vortex force
428:Luke's variational principle
1586:
767:Ocean dynamical thermostat
615:
1512:
1302:Ocean acoustic tomography
1115:Mohorovičić discontinuity
707:General circulation model
343:Benjamin–Feir instability
279:NOAA Tides & Currents
1432:Ocean surface topography
807:Thermohaline circulation
797:Subsurface ocean current
737:Hydrothermal circulation
570:Wave–current interaction
348:Boussinesq approximation
1469:Sea surface temperature
1452:Outline of oceanography
647:Atmospheric circulation
585:shallow water equations
575:Waves and shallow water
468:Significant wave height
139:, the Moon reaches its
1464:Sea surface microlayer
829:Wind generated current
1565:Physical oceanography
1297:Deep scattering layer
1279:World Geodetic System
787:Princeton Ocean Model
667:Coriolis–Stokes force
317:Physical oceanography
1317:Underwater acoustics
877:Perigean spring tide
742:Langmuir circulation
453:Rossby-gravity waves
261:UK Tidal Predictions
1479:Science On a Sphere
1085:Convergent boundary
757:Modular Ocean Model
717:Geostrophic current
433:Mild-slope equation
204:NOAA HWI definition
137:Northern Hemisphere
80:high water interval
1135:Seafloor spreading
1125:Outer trench swell
1090:Divergent boundary
990:Continental margin
975:Carbonate platform
872:Lunitidal interval
266:2005-04-06 at the
220:2008-06-24 at the
68:lunitidal interval
1552:
1551:
1544:Oceans portal
1504:World Ocean Atlas
1494:Underwater glider
1437:Ocean temperature
1100:Hydrothermal vent
1065:Submarine volcano
1000:Continental shelf
980:Coastal geography
970:Bathymetric chart
852:Amphidromic point
540:Wave nonlinearity
398:Infragravity wave
74:to the next high
64:
63:
43:length guidelines
1577:
1542:
1541:
1530:
1529:
1520:
1519:
1459:Pelagic sediment
1397:Marine pollution
1191:Deep ocean water
1060:Submarine canyon
995:Continental rise
887:Rule of twelfths
802:Sverdrup balance
732:Humboldt Current
657:Boundary current
632:
621:
438:Radiation stress
408:Iribarren number
383:Equatorial waves
338:Ballantine scale
333:Airy wave theory
310:
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182:. Archived from
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56:
50:
41:Please read the
27:
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19:
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1574:
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1536:
1508:
1347:
1321:
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1264:Sea-level curve
1235:
1174:
1160:Transform fault
1110:Mid-ocean ridge
1076:
1069:
1035:Oceanic plateau
941:
927:Tidal resonance
897:Theory of tides
838:
747:Longshore drift
697:Ekman transport
633:
627:
626:
625:
624:
623:
622:
613:
565:Wave turbulence
498:Trochoidal wave
423:Longshore drift
319:
314:
284:
277:
273:
268:Wayback Machine
259:
255:
247:M.Grant Gross,
246:
242:
234:
227:
222:Wayback Machine
213:
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202:
198:
189:
187:
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173:
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119:New York Harbor
60:
54:
51:
40:
37:may be too long
32:This article's
28:
24:
17:
12:
11:
5:
1583:
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1534:
1524:
1513:
1510:
1509:
1507:
1506:
1501:
1496:
1491:
1486:
1484:Stratification
1481:
1476:
1471:
1466:
1461:
1456:
1455:
1454:
1444:
1439:
1434:
1429:
1424:
1419:
1414:
1409:
1404:
1399:
1394:
1389:
1384:
1376:
1374:Color of water
1371:
1369:Benthic lander
1366:
1361:
1355:
1353:
1349:
1348:
1346:
1345:
1340:
1335:
1329:
1327:
1323:
1322:
1320:
1319:
1314:
1309:
1304:
1299:
1293:
1291:
1285:
1284:
1282:
1281:
1276:
1274:Sea level rise
1271:
1269:Sea level drop
1266:
1261:
1256:
1251:
1245:
1243:
1237:
1236:
1234:
1233:
1228:
1223:
1218:
1213:
1208:
1203:
1198:
1193:
1188:
1182:
1180:
1176:
1175:
1173:
1172:
1167:
1162:
1157:
1152:
1147:
1142:
1137:
1132:
1127:
1122:
1117:
1112:
1107:
1105:Marine geology
1102:
1097:
1092:
1087:
1081:
1079:
1071:
1070:
1068:
1067:
1062:
1057:
1052:
1047:
1045:Passive margin
1042:
1040:Oceanic trench
1037:
1032:
1027:
1022:
1017:
1012:
1007:
1002:
997:
992:
987:
982:
977:
972:
967:
962:
957:
951:
949:
943:
942:
940:
939:
934:
929:
924:
919:
914:
909:
904:
899:
894:
889:
884:
879:
874:
869:
864:
859:
854:
848:
846:
840:
839:
837:
836:
831:
826:
821:
816:
815:
814:
804:
799:
794:
789:
784:
779:
774:
772:Ocean dynamics
769:
764:
759:
754:
749:
744:
739:
734:
729:
724:
719:
714:
709:
704:
699:
694:
689:
684:
679:
674:
669:
664:
662:Coriolis force
659:
654:
649:
643:
641:
635:
634:
616:
614:
612:
611:
610:
609:
599:
594:
589:
588:
587:
582:
572:
567:
562:
557:
552:
547:
542:
537:
532:
527:
522:
517:
512:
511:
510:
500:
495:
490:
485:
483:Stokes problem
480:
475:
470:
465:
460:
455:
450:
445:
440:
435:
430:
425:
420:
418:Kinematic wave
415:
410:
405:
400:
395:
390:
385:
380:
375:
370:
365:
360:
355:
350:
345:
340:
335:
329:
327:
321:
320:
315:
313:
312:
305:
298:
290:
283:
282:
271:
253:
240:
225:
207:
196:
170:
168:
165:
164:
163:
156:
153:
103:Moon's gravity
62:
61:
31:
29:
22:
15:
13:
10:
9:
6:
4:
3:
2:
1582:
1571:
1568:
1566:
1563:
1562:
1560:
1545:
1540:
1535:
1533:
1525:
1523:
1515:
1514:
1511:
1505:
1502:
1500:
1497:
1495:
1492:
1490:
1487:
1485:
1482:
1480:
1477:
1475:
1472:
1470:
1467:
1465:
1462:
1460:
1457:
1453:
1450:
1449:
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1438:
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1430:
1428:
1425:
1423:
1420:
1418:
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1413:
1410:
1408:
1405:
1403:
1400:
1398:
1395:
1393:
1392:Marine energy
1390:
1388:
1385:
1383:
1382:
1377:
1375:
1372:
1370:
1367:
1365:
1362:
1360:
1359:Acidification
1357:
1356:
1354:
1350:
1344:
1341:
1339:
1336:
1334:
1331:
1330:
1328:
1324:
1318:
1315:
1313:
1312:SOFAR channel
1310:
1308:
1305:
1303:
1300:
1298:
1295:
1294:
1292:
1290:
1286:
1280:
1277:
1275:
1272:
1270:
1267:
1265:
1262:
1260:
1257:
1255:
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1250:
1247:
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1227:
1224:
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1219:
1217:
1214:
1212:
1209:
1207:
1204:
1202:
1199:
1197:
1194:
1192:
1189:
1187:
1184:
1183:
1181:
1177:
1171:
1168:
1166:
1163:
1161:
1158:
1156:
1153:
1151:
1148:
1146:
1143:
1141:
1138:
1136:
1133:
1131:
1128:
1126:
1123:
1121:
1120:Oceanic crust
1118:
1116:
1113:
1111:
1108:
1106:
1103:
1101:
1098:
1096:
1095:Fracture zone
1093:
1091:
1088:
1086:
1083:
1082:
1080:
1078:
1072:
1066:
1063:
1061:
1058:
1056:
1053:
1051:
1048:
1046:
1043:
1041:
1038:
1036:
1033:
1031:
1030:Oceanic basin
1028:
1026:
1023:
1021:
1018:
1016:
1013:
1011:
1008:
1006:
1003:
1001:
998:
996:
993:
991:
988:
986:
983:
981:
978:
976:
973:
971:
968:
966:
963:
961:
960:Abyssal plain
958:
956:
953:
952:
950:
948:
944:
938:
935:
933:
930:
928:
925:
923:
920:
918:
915:
913:
910:
908:
905:
903:
900:
898:
895:
893:
890:
888:
885:
883:
880:
878:
875:
873:
870:
868:
867:Internal tide
865:
863:
860:
858:
855:
853:
850:
849:
847:
845:
841:
835:
832:
830:
827:
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822:
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813:
810:
809:
808:
805:
803:
800:
798:
795:
793:
790:
788:
785:
783:
780:
778:
775:
773:
770:
768:
765:
763:
762:Ocean current
760:
758:
755:
753:
750:
748:
745:
743:
740:
738:
735:
733:
730:
728:
725:
723:
720:
718:
715:
713:
710:
708:
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703:
700:
698:
695:
693:
690:
688:
685:
683:
680:
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673:
670:
668:
665:
663:
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648:
645:
644:
642:
640:
636:
631:
620:
608:
605:
604:
603:
600:
598:
595:
593:
590:
586:
583:
581:
578:
577:
576:
573:
571:
568:
566:
563:
561:
560:Wave shoaling
558:
556:
553:
551:
548:
546:
543:
541:
538:
536:
533:
531:
528:
526:
523:
521:
520:Ursell number
518:
516:
513:
509:
506:
505:
504:
501:
499:
496:
494:
491:
489:
486:
484:
481:
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469:
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461:
459:
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451:
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439:
436:
434:
431:
429:
426:
424:
421:
419:
416:
414:
411:
409:
406:
404:
403:Internal wave
401:
399:
396:
394:
391:
389:
386:
384:
381:
379:
376:
374:
371:
369:
366:
364:
361:
359:
356:
354:
353:Breaking wave
351:
349:
346:
344:
341:
339:
336:
334:
331:
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328:
326:
322:
318:
311:
306:
304:
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197:
186:on 2009-05-20
185:
181:
175:
172:
166:
162:
161:Phase (waves)
159:
158:
154:
152:
150:
146:
142:
141:highest point
138:
133:
131:
130:gravity waves
126:
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120:
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108:
104:
99:
97:
93:
92:establishment
89:
85:
81:
77:
73:
69:
58:
48:
44:
38:
36:
30:
21:
20:
1499:Water column
1447:Oceanography
1422:Observations
1417:Explorations
1387:Marginal sea
1380:
1338:OSTM/Jason-2
1170:Volcanic arc
1145:Slab suction
871:
862:Head of tide
752:Loop Current
692:Ekman spiral
478:Stokes drift
388:Gravity wave
363:Cnoidal wave
274:
256:
249:Oceanography
248:
243:
235:
210:
199:
188:. Retrieved
184:the original
174:
134:
127:
109:reaches the
100:
91:
87:
83:
79:
67:
65:
52:
35:lead section
33:
1489:Thermocline
1206:Mesopelagic
1179:Ocean zones
1150:Slab window
1015:Hydrography
955:Abyssal fan
922:Tidal range
912:Tidal power
907:Tidal force
792:Rip current
727:Gulf Stream
687:Ekman layer
677:Downwelling
652:Baroclinity
639:Circulation
535:Wave height
525:Wave action
508:megatsunami
488:Stokes wave
448:Rossby wave
413:Kelvin wave
393:Green's law
123:lunar phase
96:tide tables
72:culmination
1559:Categories
1427:Reanalysis
1326:Satellites
1307:Sofar bomb
1155:Subduction
1130:Ridge push
1025:Ocean bank
1005:Contourite
932:Tide gauge
917:Tidal race
902:Tidal bore
892:Slack tide
857:Earth tide
777:Ocean gyre
597:Wind setup
592:Wind fetch
555:Wave setup
550:Wave radar
545:Wave power
443:Rogue wave
373:Dispersion
190:2017-06-04
167:References
149:tide clock
1289:Acoustics
1241:Sea level
1140:Slab pull
1077:tectonics
985:Cold seep
947:Landforms
824:Whirlpool
819:Upwelling
602:Wind wave
530:Wave base
458:Sea state
378:Edge wave
368:Cross sea
115:sea floor
45:and help
1522:Category
1474:Seawater
1201:Littoral
1196:Deep sea
1055:Seamount
937:Tideline
882:Rip tide
812:shutdown
782:Overflow
515:Undertow
358:Clapotis
264:Archived
218:Archived
155:See also
111:meridian
55:May 2017
1532:Commons
1402:Mooring
1352:Related
1343:Jason-3
1333:Jason-1
1216:Pelagic
1211:Oceanic
1186:Benthic
503:Tsunami
473:Soliton
1221:Photic
1050:Seabed
463:Seiche
145:tables
1570:Tides
1412:Ocean
1381:Alvin
1231:Swash
1075:Plate
1020:Knoll
1010:Guyot
965:Atoll
844:Tides
607:model
493:Swell
325:Waves
1379:DSV
1364:Argo
1226:Surf
682:Eddy
107:Moon
76:tide
66:The
90:or
88:age
84:HWI
1561::
228:^
98:.
309:e
302:t
295:v
193:.
82:(
57:)
53:(
49:.
39:.
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