E. Aykutlug and T. K. Dupont
The dynamic response of outlet glaciers on short (annual to decadal) timescales is affected by various external forcings, such as basal or oceanic conditions. Understanding the sensitivity of the dynamic response to such forcings can help assess more accurate ice volume projections. In this work, we investigate the spatiotemporal sensitivity of outlet glaciers to fast cyclical forcings using a one-dimensional depth and width-averaged heuristic model. Our results indicate that even on such short timescales, nonlinearities in ice dynamics may lead to an asymmetric response, despite the forcing functions being symmetric around each reference value. Results also show that such short-timescale effects become more pronounced as glaciers become closer to flotation. While being qualitatively similar for both downsloping and upsloping bed geometries, the results indicate higher sensitivity for upsloping ("West Antarctica-like") beds. The range in asymmetric response for different configurations motivate parameterizing or including short-timescale effects in models while investigating the dynamic behavior of outlet glaciers.
Received: 09 Dec 2014 – Discussion started: 12 Jan 2015
E. Aykutlug and T. K. Dupont
Viewed
Total article views: 1,394 (including HTML, PDF, and XML)
HTML
PDF
XML
Total
BibTeX
EndNote
952
307
135
1,394
77
128
HTML: 952
PDF: 307
XML: 135
Total: 1,394
BibTeX: 77
EndNote: 128
Views and downloads (calculated since 12 Jan 2015)
Month
HTML
PDF
XML
Total
Jan 2015
58
50
10
118
Feb 2015
26
19
4
49
Mar 2015
13
16
2
31
Apr 2015
19
3
3
25
May 2015
7
2
1
10
Jun 2015
8
4
0
12
Jul 2015
10
5
1
16
Aug 2015
3
2
0
5
Sep 2015
5
3
0
8
Oct 2015
12
6
9
27
Nov 2015
8
4
0
12
Dec 2015
3
6
0
9
Jan 2016
15
5
0
20
Feb 2016
14
9
0
23
Mar 2016
34
12
0
46
Apr 2016
3
2
0
5
May 2016
10
6
0
16
Jun 2016
4
3
0
7
Jul 2016
5
2
1
8
Aug 2016
7
2
0
9
Sep 2016
5
1
1
7
Oct 2016
11
1
0
12
Nov 2016
11
4
0
15
Dec 2016
5
2
7
Jan 2017
11
1
4
16
Feb 2017
16
1
9
26
Mar 2017
27
11
38
Apr 2017
29
1
7
37
May 2017
31
1
9
41
Jun 2017
31
1
8
40
Jul 2017
9
1
0
10
Aug 2017
5
1
0
6
Sep 2017
9
0
9
Oct 2017
6
1
0
7
Nov 2017
8
0
8
Dec 2017
6
0
6
Jan 2018
9
0
9
Feb 2018
12
1
4
17
Mar 2018
6
2
0
8
Apr 2018
4
2
1
7
May 2018
5
3
0
8
Jun 2018
4
1
0
5
Jul 2018
4
1
0
5
Aug 2018
4
3
0
7
Sep 2018
3
3
0
6
Oct 2018
2
1
0
3
Nov 2018
5
2
0
7
Dec 2018
1
1
0
2
Jan 2019
4
3
0
7
Feb 2019
9
2
0
11
Mar 2019
7
5
0
12
Apr 2019
2
3
0
5
May 2019
3
2
0
5
Jun 2019
5
2
0
7
Jul 2019
7
2
2
11
Aug 2019
1
0
1
Sep 2019
2
3
0
5
Oct 2019
1
1
1
3
Nov 2019
13
3
2
18
Dec 2019
6
1
7
Jan 2020
10
6
0
16
Feb 2020
8
3
0
11
Mar 2020
4
1
1
6
Apr 2020
4
0
4
May 2020
3
1
1
5
Jun 2020
2
1
3
Jul 2020
10
6
6
22
Aug 2020
2
1
0
3
Sep 2020
3
3
0
6
Oct 2020
2
1
3
Nov 2020
2
3
3
8
Dec 2020
6
3
1
10
Jan 2021
4
3
0
7
Feb 2021
6
1
0
7
Mar 2021
6
2
1
9
Apr 2021
4
1
0
5
May 2021
4
1
0
5
Jun 2021
8
1
0
9
Jul 2021
5
1
6
Aug 2021
9
3
1
13
Sep 2021
9
0
9
Oct 2021
12
3
0
15
Nov 2021
9
2
0
11
Dec 2021
9
1
0
10
Jan 2022
13
3
0
16
Feb 2022
13
3
3
19
Mar 2022
7
1
4
12
Apr 2022
8
0
8
May 2022
7
0
7
Jun 2022
2
1
0
3
Jul 2022
2
0
2
Aug 2022
8
1
0
9
Sep 2022
6
1
2
9
Oct 2022
10
1
1
12
Nov 2022
9
1
1
11
Dec 2022
12
2
0
14
Jan 2023
5
3
0
8
Feb 2023
8
2
0
10
Mar 2023
12
1
1
14
Apr 2023
2
0
2
May 2023
6
5
3
14
Jun 2023
11
3
2
16
Jul 2023
10
2
2
14
Aug 2023
4
1
1
6
Sep 2023
11
3
2
16
Oct 2023
8
0
8
Nov 2023
4
1
1
6
Dec 2023
7
1
0
8
Jan 2024
7
1
0
8
Feb 2024
10
1
0
11
Mar 2024
8
1
2
11
Cumulative views and downloads
(calculated since 12 Jan 2015)
Month
HTML views
PDF downloads
XML downloads
Jan 2015
58
50
10
Feb 2015
84
69
14
Mar 2015
97
85
16
Apr 2015
116
88
19
May 2015
123
90
20
Jun 2015
131
94
20
Jul 2015
141
99
21
Aug 2015
144
101
21
Sep 2015
149
104
21
Oct 2015
161
110
30
Nov 2015
169
114
30
Dec 2015
172
120
30
Jan 2016
187
125
30
Feb 2016
201
134
30
Mar 2016
235
146
30
Apr 2016
238
148
30
May 2016
248
154
30
Jun 2016
252
157
30
Jul 2016
257
159
31
Aug 2016
264
161
31
Sep 2016
269
162
32
Oct 2016
280
163
32
Nov 2016
291
167
32
Dec 2016
296
167
34
Jan 2017
307
168
38
Feb 2017
323
169
47
Mar 2017
350
169
58
Apr 2017
379
170
65
May 2017
410
171
74
Jun 2017
441
172
82
Jul 2017
450
173
82
Aug 2017
455
174
82
Sep 2017
464
174
82
Oct 2017
470
175
82
Nov 2017
478
175
82
Dec 2017
484
175
82
Jan 2018
493
175
82
Feb 2018
505
176
86
Mar 2018
511
178
86
Apr 2018
515
180
87
May 2018
520
183
87
Jun 2018
524
184
87
Jul 2018
528
185
87
Aug 2018
532
188
87
Sep 2018
535
191
87
Oct 2018
537
192
87
Nov 2018
542
194
87
Dec 2018
543
195
87
Jan 2019
547
198
87
Feb 2019
556
200
87
Mar 2019
563
205
87
Apr 2019
565
208
87
May 2019
568
210
87
Jun 2019
573
212
87
Jul 2019
580
214
89
Aug 2019
581
214
89
Sep 2019
583
217
89
Oct 2019
584
218
90
Nov 2019
597
221
92
Dec 2019
603
221
93
Jan 2020
613
227
93
Feb 2020
621
230
93
Mar 2020
625
231
94
Apr 2020
629
231
94
May 2020
632
232
95
Jun 2020
634
232
96
Jul 2020
644
238
102
Aug 2020
646
239
102
Sep 2020
649
242
102
Oct 2020
649
244
103
Nov 2020
651
247
106
Dec 2020
657
250
107
Jan 2021
661
253
107
Feb 2021
667
254
107
Mar 2021
673
256
108
Apr 2021
677
257
108
May 2021
681
258
108
Jun 2021
689
259
108
Jul 2021
694
259
109
Aug 2021
703
262
110
Sep 2021
712
262
110
Oct 2021
724
265
110
Nov 2021
733
267
110
Dec 2021
742
268
110
Jan 2022
755
271
110
Feb 2022
768
274
113
Mar 2022
775
275
117
Apr 2022
783
275
117
May 2022
790
275
117
Jun 2022
792
276
117
Jul 2022
794
276
117
Aug 2022
802
277
117
Sep 2022
808
278
119
Oct 2022
818
279
120
Nov 2022
827
280
121
Dec 2022
839
282
121
Jan 2023
844
285
121
Feb 2023
852
287
121
Mar 2023
864
288
122
Apr 2023
866
288
122
May 2023
872
293
125
Jun 2023
883
296
127
Jul 2023
893
298
129
Aug 2023
897
299
130
Sep 2023
908
302
132
Oct 2023
916
302
132
Nov 2023
920
303
133
Dec 2023
927
304
133
Jan 2024
934
305
133
Feb 2024
944
306
133
Mar 2024
952
307
135
Cited
Saved
Latest update: 27 Mar 2024