FN Archimer Export Format PT J TI Topography and grounding in a simple bottom layer model BT AF SPEER, Kevin G TZIPERMAN, Eli FELIKS, Yizhak AS 1:1,4;2:2;3:3; FF 1:;2:;3:; C1 IFREMER,PHYS OCEANS LAB,BP 70,F-29280 PLOUZANE,FRANCE WEIZMANN INST SCI,IL-76100 REHOVOT,ISRAEL. INST BIOL RES,IL-76100 NESS ZIONA,ISRAEL. C2 CNRS, FRANCE WEIZMANN INST SCI, ISRAEL IIBR, ISRAEL IFREMER, FRANCE SI BREST IN WOS Ifremer jusqu'en 2018 IF 2.68 TC 17 UR https://archimer.ifremer.fr/doc/00193/30390/29227.pdf LA English DT Article AB A reduced-gravity model for a dense bottom layer under a motionless deep layer is used to investigate bottom layer flow with topography. The two competing effects in the model are topography, which introduces a topographic beta effect, and strong layer thickness variation, which allows for the possibility of zero-layer thickness or grounding. The goal is to arrive at a simple, observationally relevant characterization of the model which can help to distinguish different dynamical mechanisms operating in the ocean. Several regimes are identified, including situations for which the layer depth goes to zero with and without topography. Ways of distinguishing observationally between competing effects are suggested. The study is motivated by the observed shift of Antarctic Bottom Water in the western North Atlantic Ocean from the west to the east; this phenomenon is used to discriminate key elements of the model. PY 1993 PD MAY SO Journal Of Geophysical Research-oceans SN 0148-0227 PU Amer Geophysical Union VL 98 IS C5 UT A1993LC97400015 BP 8547 EP 8558 DI 10.1029/92JC03018 ID 30390 ER EF